Osteotomy guiding device

Abstract

The invention discloses an osteotomy guiding device which is used for guiding osteotomy and comprises a first guide plate, a second guide plate and a checking piece, the checking piece comprises a checking part and a connecting part, a positioning part is arranged on the surface of the first guide plate, and the checking piece is fixedly connected to the second guide plate through one end of the connecting part. The checking part is arranged at the other end of the connecting part, and the positioning part is used for being matched with the checking part so as to check the correction angle after osteotomy. The first guide plate is connected with one side of the osteotomy opening, and the second guide plate is connected with the other side of the osteotomy opening. After osteotomy is completed, the first guide plate drives one side of the osteotomy opening to move in the direction away from the other side of the opening; or the second guide plate drives the other side of the osteotomy opening to move in the direction far away from one side of the opening, and finally matching of the positioning part and the verification part is achieved. At the moment, the first guide plate and the second guide plate cannot continuously move according to the original moving direction, so that the osteotomy checking angle reaches a preset value.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to an osteotomy guiding device. Background Art

[0002] The existing high tibial osteotomy mainly involves X-ray imaging scans of the patient's lower limbs in the weight-bearing position before surgery, and then planning and measuring based on the X-ray images. During the operation, the surgeon first visually locates the patient, and then repeatedly measures and adjusts the final osteotomy position through fluoroscopy and other means and measuring tools. The osteotomy operation is then performed to determine the cutting depth of the osteotomy knife and complete the osteotomy. The osteotomy area is then expanded with a spreader, and the expansion depth is repeatedly adjusted with the help of fluoroscopy or measuring tools so that the tibia on both sides of the opening reaches a predetermined correction angle. Finally, the osteotomy area is fixed with a fixation plate. This method relies more on the doctor's clinical practice experience, and the osteotomy accuracy and correction accuracy are prone to deviations, and there are also large differences between different operators. At the same time, multiple fluoroscopy is required during the operation to adjust and determine the osteotomy position and the degree of expansion of the osteotomy area. However, there are often adverse factors such as radiation and high radiation during the fluoroscopy process, which increases the risk of X-ray exposure for patients and doctors, and is likely to endanger the health of patients and doctors. At the same time, the surgical method of measuring while operating will lead to longer operation time and increase the burden on doctors. The existing high tibial osteotomy also uses an osteotomy guide for surgery. First, the osteotomy position, correction angle, and osteotomy depth are designed through CT data, and then the osteotomy surgery is performed. The osteotomy guide is fitted to the patient's bone, and the osteotomy knife is used to cut the bone in the reserved osteotomy area. Then, a distractor is used to distract the osteotomy area so that the tibia on both sides of the opening reaches a predetermined correction angle, and finally a fixation plate is used to fix the osteotomy area. This method can solve the problems of low accuracy and long operation time of traditional osteotomy, but the osteotomy guide used only specifies the osteotomy position and osteotomy depth, and does not set a verification structure for whether the correction angle reaches the predetermined value. After the osteotomy, the doctor still needs to use a distractor to distract the osteotomy area, and repeatedly adjust the distraction depth with the help of perspective or measuring tools to make the tibia on both sides of the opening reach the predetermined correction angle, which will affect the accuracy of the correction angle, prolong the operation time, and reduce the health of the patient. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defect that the osteotomy guide plate used in the prior art only specifies the osteotomy position and osteotomy depth, and does not provide a verification structure for whether the correction angle reaches the predetermined value. After the osteotomy, the doctor still needs to use a distractor to distract the osteotomy area, and repeatedly adjust the distraction depth with the help of fluoroscopy or measuring tools, so that the tibia on both sides of the opening reaches the predetermined correction angle. This will affect the accuracy of the correction angle, prolong the operation time, and reduce the health defects of the patient, and an osteotomy guiding device is provided.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention discloses an osteotomy guiding device, which is used for guiding osteotomy. The osteotomy guiding device comprises a first guide plate, a second guide plate and a verification piece, the verification piece comprises a verification part and a connecting part, a positioning part is provided on the surface of the first guide plate, the verification piece is fixedly connected to the second guide plate through one end of the connecting part, the verification part is provided at the other end of the connecting part, and the positioning part is used to match with the verification part to verify the correction angle after osteotomy.

[0006] In this solution, the first guide plate is connected to one side of the osteotomy opening, and the second guide plate is connected to the other side of the osteotomy opening. After the osteotomy is completed, the first guide plate drives one side of the osteotomy opening to move in a direction away from the other side of the opening; or the second guide plate drives the other side of the osteotomy opening to move in a direction away from one side of the opening, and finally the positioning part and the verification part are adapted. The adaptation of the positioning part and the verification part realizes the mutual limitation of the verification part and the first guide plate, so that the first guide plate can be positioned by the verification part. At this time, neither the first guide plate nor the second guide plate can continue to move in the original moving direction, so that the osteotomy verification angle reaches a preset value. The above-mentioned structural form improves the accuracy of osteotomy, gets rid of the dependence of osteotomy surgery on the doctor's experience, reduces the difficulty of surgery and improves the surgical effect. At the same time, it also reduces the number of intraoperative fluoroscopy times of osteotomy surgery, greatly reduces intraoperative radiation, protects the health of doctors and patients, and reduces the operation time.

[0007] Preferably, the connecting portion includes a middle portion, a first bending portion and a second bending portion, the middle portion is rod-shaped and connected to one end of the first bending portion and the second bending portion, the other end of the first bending portion is connected to the verification portion, and the other end of the second bending portion is fixedly connected to the second guide plate.

[0008] In this solution, the first bending portion enables the verification piece to be bent toward the first guide plate, so that the verification portion connected to the first bending portion can cooperate with the positioning portion. In addition, with the above structural form, the middle portion is connected to the second guide plate through the second bending portion, which has the characteristic of convenient connection.

[0009] Preferably, the second bending portion is U-shaped, and the extension direction of the middle portion is perpendicular to the second guide plate; the first bending portion includes a first bending section and a second bending section, the two ends of the first bending section are respectively connected to the middle portion and the second bending section, the bending angle of the first bending section is 90 degrees, and the end of the second bending section away from the first bending section is connected to the verification portion, and the bending angle of the second bending section is α, α<90°.

[0010] In the present solution, the above-mentioned structural form is adopted, so that when the first guide plate moves to the preset position relative to the second guide plate, the verification part and the positioning part can cooperate, so that the osteotomy guide device can be suitable for osteotomy surgery for patients in different situations, such as those who do not have the problem of retroversion and those who have the problem of retroversion for correction, thereby improving the scope of application of the osteotomy guide device.

[0011] Preferably, one of the verification portion and the positioning portion includes a convex portion, and the other includes a concave portion, and the convex portion and the concave portion are arranged opposite to and matched with each other.

[0012] In this solution, the mutual limitation between the verification piece and the first guide plate and the second guide plate is achieved through the adaptation of the convex part and the concave part, which increases the matching area between the verification piece and the first guide plate, thereby improving the stability and reliability of the verification piece positioning the first guide plate. In addition, the above structural form has the characteristic of convenient matching.

[0013] Preferably, the convex portion is in a hemispherical shape, and the concave portion is a concave hemispherical surface.

[0014] In this solution, the above-mentioned structural form is adopted to increase the matching area between the verification piece and the first guide plate, thereby improving the stability and reliability of the verification piece in positioning the first guide plate.

[0015] Preferably, the convex portion is a prism or a frustum, and the side surface and the upper bottom surface of the prism or the frustum are both adapted to the surface of the concave portion.

[0016] Preferably, there is a preset vertical distance between the verification part and the surface of the first guide plate on which the positioning part is provided, and the preset vertical distance is equal to the vertical distance that the positioning part moves closer to the verification part when the first guide plate moves to a preset position relative to the second guide plate; when in the preset position, the axis of the verification part coincides with the axis of the positioning part.

[0017] In this solution, the above-mentioned structural form is adopted, and the first guide plate is connected to one side of the osteotomy opening, and the second guide plate is connected to the other side of the osteotomy opening. After the osteotomy is completed, the first guide plate drives one side of the osteotomy opening to move in a direction away from the other side of the opening; or the second guide plate drives the other side of the osteotomy opening to move in a direction away from the one side of the opening, so that the positioning part moves in a direction close to the verification part, or the verification part moves in a direction close to the positioning part, so that when in the preset position, the verification part can cooperate with the positioning part.

[0018] Preferably, the checking portion includes a protruding portion, the positioning portion includes a surface on the first guide plate that matches the protruding portion, and one end of the protruding portion close to the surface is a plane.

[0019] In this solution, the above-mentioned structural form is adopted, and the mutual limitation between the verification part and the first guide plate is achieved through the adaptation between the protrusion and the plane of the positioning part, thereby achieving the mutual limitation between the verification piece and the first guide plate and the second guide plate.

[0020] Preferably, the osteotomy guide device further comprises a buckle and a slot, wherein the buckle is used for engaging with the slot, and one of the buckle and the slot is arranged at one end of the connecting portion, and the other is arranged on the second guide plate.

[0021] In this solution, the second guide plate is connected to the connecting part by the cooperation of the buckle and the slot, so that if one of the second guide plate and the connecting part is damaged, only the damaged second guide plate or the connecting part needs to be replaced to achieve normal use, which has the characteristic of cost saving. In addition, the above structural form also facilitates the processing of the connecting part and the second guide plate.

[0022] Preferably, one end of the first guide plate close to the second guide plate and one end of the second guide plate close to the first guide plate both have a matching surface, the matching surface includes a first plane and a second plane, the first plane and the second plane are connected, and the first plane and the second plane are arranged at an angle; an osteotomy groove is configured between the two matching surfaces;

[0023] The osteotomy guiding device further comprises a connecting column, two ends of which are respectively connected to the two matching surfaces, so that a fixed connection relationship is formed between the two matching surfaces.

[0024] In the present solution, the above-mentioned structural form is adopted, and both the first guide plate and the second guide plate adopt a V-shaped three-dimensional structure, so that they can quickly fit with the patient's bone surface during surgery; at the same time, the first guide plate and the second guide plate set the corresponding first plane and second plane according to the correction angle of the knee joint axis, so that the doctor can quickly and accurately locate the osteotomy position and its depth during surgery, thereby improving the osteotomy accuracy, getting rid of the dependence of osteotomy surgery on the doctor's experience, reducing the difficulty of surgery and improving the surgical effect, while also reducing the number of fluoroscopy times during osteotomy surgery, greatly reducing intraoperative radiation, ensuring the health of doctors and patients, and reducing surgery time.

[0025] The positive and progressive effects of the present invention are:

[0026] The first guide plate is connected to one side of the osteotomy opening, and the second guide plate is connected to the other side of the osteotomy opening. After the osteotomy is completed, the first guide plate drives one side of the osteotomy opening to move in a direction away from the other side of the opening; or the second guide plate drives the other side of the osteotomy opening to move in a direction away from one side of the opening, and finally the positioning part and the verification part are adapted, thereby realizing the mutual limitation of the verification part and the first guide plate, so as to position the first guide plate through the verification part. At this time, neither the first guide plate nor the second guide plate can continue to move in the original moving direction, so that the osteotomy verification angle reaches a preset value. The above-mentioned structural form improves the accuracy of osteotomy, gets rid of the dependence of osteotomy surgery on the doctor's experience, reduces the difficulty of surgery and improves the surgical effect, while also reducing the number of intraoperative fluoroscopy times for osteotomy surgery, greatly reducing intraoperative radiation, ensuring the health of doctors and patients, and reducing surgical time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the verification part and the positioning part of the osteotomy guide device of Example 1 of the present invention in an unadapted state;

[0028] Figure 2 is a schematic diagram of an osteotomy guide device according to embodiment 1 of the present invention;

[0029] Figure 3 It is a partial schematic diagram of the osteotomy guide device of Example 1 of the present invention;

[0030] Figure 4 It is a partial structural schematic diagram of the osteotomy guide device of Example 1 of the present invention;

[0031] Figure 5 Schematic diagram of the verification part and the positioning part of the osteotomy guide device in embodiment 1 of the present invention in the adapted state;

[0032] Figure 6 It is a partial structural schematic diagram of the verification part and the positioning part of the osteotomy guide device in the first embodiment of the present invention in the adapted state;

[0033] Figure 7 It is a partial three-dimensional schematic diagram of the osteotomy guide device according to Example 1 of the present invention;

[0034] Figure 8 Schematic diagram of the verification part and the positioning part of the osteotomy guide device of Example 2 of the present invention in an unadapted state;

[0035] Fig. 9 Schematic diagram of the verification part and the positioning part of the osteotomy guide device in embodiment 2 of the present invention in an adapted state;

[0036] Fig.10 It is a partial schematic diagram of the osteotomy guide device of Example 3 of the present invention;

[0037] Fig.11 It is a partial structural schematic diagram of an osteotomy guide device according to Embodiment 3 of the present invention;

[0038] Fig.12 Schematic diagram of a verification piece according to Embodiment 3 of the present invention;

[0039] Fig.13 Schematic diagram of the verification part and the positioning part of the osteotomy guide device in embodiment 3 of the present invention in the adapted state;

[0040] Fig.14 It is a partial schematic diagram of the verification part and the positioning part of the osteotomy guide device of Example 3 of the present invention in the adapted state.

[0041] Description of reference numerals:

[0042] Osteotomy guide device 100

[0043] First guide plate 1

[0044] Second guide plate 2

[0045] Check Item 3

[0046] Verification unit 31

[0047] Connecting part 32

[0048] Middle part 321

[0049] The second bending portion 322

[0050] First bending portion 323

[0051] The first bending section 3231

[0052] The second bending section 3232

[0053] Guide plate positioning hole 4

[0054] Connecting column 5

[0055] Mating surface 6

[0056] First plane 61

[0057] Second plane 62

[0058] Positioning unit 7

[0059] Projection 8

[0060] Recess 9

[0061] Press block 10

[0062] Protrusion 11

[0063] Buckle 12

[0064] Card slot 13

[0065] Transverse osteotomy groove 14

[0066] Ascending osteotomy groove 15

[0067] Recessed area 16 DETAILED DESCRIPTION

[0068] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0069] Example 1

[0070] like Figures 1 to 7 As shown, this embodiment provides an osteotomy guide device 100, which is used to guide osteotomy. The osteotomy guide device 100 includes a first guide plate 1, a second guide plate 2 and a verification piece 3. The verification piece 3 includes a verification portion 31 and a connecting portion 32. A positioning portion 7 is provided on the surface of the first guide plate 1. The verification piece 3 is fixedly connected to the second guide plate 2 through one end of the connecting portion 32. The verification portion 31 is provided at the other end of the connecting portion 32. The positioning portion 7 is used to match with the verification portion 31 to verify the correction angle after osteotomy. Specifically, the first guide plate 1 is connected to one side of the osteotomy opening, and the second guide plate 2 is connected to the other side of the osteotomy opening. After the osteotomy is completed, the first guide plate 1 drives one side of the osteotomy opening to move in a direction away from the other side of the opening; or the second guide plate 2 drives the other side of the osteotomy opening to move in a direction away from one side of the opening, and finally the positioning portion 7 and the verification portion 31 are adapted. Through the adaptation of the positioning part 7 and the verification part 31, the mutual limitation of the verification part 31 and the first guide plate 1 is realized, and then the verification part 31 realizes the positioning of the first guide plate 1. At this time, the first guide plate 1 and the second guide plate 2 cannot continue to move in the original moving direction, so that the osteotomy verification angle reaches the preset value.

[0071] In this embodiment, the first guide plate 1 is connected to the upper bone of the opening, and the second guide plate 2 is connected to the lower bone of the opening. After the osteotomy is completed, the upper bone of the opening and the first guide plate 1 are moved upward, or the lower bone of the opening and the second guide plate 2 are moved downward, so that the verification part 31 moves in the direction close to the positioning part 7, or the positioning part 7 moves in the direction close to the verification part 31, and finally the positioning part 7 and the verification part 31 are matched. The matched positioning part 7 and the verification part 31 can limit each other, so that the verification piece 3 and the first guide plate 1 and the second guide plate 2 can also limit each other, so that the first guide plate 1 cannot continue to move up and the second guide plate 2 cannot continue to move down, and then the osteotomy verification angle reaches a preset value. The above-mentioned structural form improves the osteotomy accuracy, gets rid of the dependence of the osteotomy operation on the doctor's experience, reduces the difficulty of the operation and improves the surgical effect, and also reduces the number of intraoperative fluoroscopy times of the osteotomy operation, greatly reduces intraoperative radiation, protects the health of doctors and patients, and reduces the operation time. In other embodiments, the first guide plate 1 may also be connected to the bone at the lower side of the opening, and the second guide plate 2 may be connected to the bone at the upper side of the opening. The specific connection positions of the first guide plate 1 and the second guide plate 2 at the opening are not limited herein.

[0072] In specific use, such as Figure 2 As shown, the surfaces of the first guide plate 1 and the second guide plate 2 close to the upper bone or the lower bone are coupling surfaces that fit the patient's tibia, and at least one bony positioning point is set on the first guide plate 1 and the second guide plate 2, which ensures the accuracy of the first guide plate 1 and the second guide plate 2 and the osteotomy positioning. A large number of recessed areas 16 are reserved on the coupling surface, which can match the soft tissue and blood vessels in the tibial area, thereby protecting the soft tissue and blood vessels in the tibial area. The osteotomy guide device 100 also includes a pressing block 10, and the pressing block 10 is set on the outer surface corresponding to the bony positioning point. At least four positioning guide plate positioning holes 4 are set on the lower right side of the pressing block 10, and the number of positioning holes opened on the first guide plate 1 and the second guide plate 2 is nearly equal, which is convenient for the positioning and fastening of the first guide plate 1 and the second guide plate 2 after osteotomy. In order to facilitate the doctor's osteotomy operation, a pressing block 10 is also set in the middle of the second guide plate 2 near the osteotomy area, and a depth prompt number is set above the pressing block 10. In addition, at least one fixing plate positioning hole is provided on the osteotomy guide device 100, and some fixing plate positioning holes overlap with the guide plate positioning holes 4, thereby ensuring the positioning accuracy of the fixing plate when the osteotomy correction is completed, and the doctor does not need to perform secondary positioning of the positioning plate after the osteotomy is completed, thereby reducing the difficulty of the operation and improving the correction accuracy. In other embodiments, a pressing block 10 may also be provided on the second guide plate 2, thereby further facilitating the doctor's osteotomy operation.

[0073] See also Figure 1 as well as Figures 3 to 7It is understood that the connecting portion 32 includes a middle portion 321, a first bending portion 323 and a second bending portion 322. The middle portion 321 is rod-shaped and connected to one end of the first bending portion 323 and the second bending portion 322. The other end of the first bending portion 323 is connected to the verification portion 31, and the other end of the second bending portion 322 is fixedly connected to the second guide plate 2. Specifically, one end of the first bending portion 323 is connected to the middle portion 321, and the other end of the first bending portion 323 is bent toward the direction close to the first guide plate 1, so that the verification piece 3 can be bent toward the direction close to the first guide plate 1 through the first bending portion 323, so that the verification portion 31 connected to the first bending portion 323 can be matched with the positioning portion 7. In addition, with the above-mentioned structural form, the middle portion 321 is connected to the second guide plate 2 through the second bending portion 322, which has the characteristic of convenient connection.

[0074] In this embodiment, the middle portion 321, the first bending portion 323 and the second bending portion 322 are integrally formed, which improves the structural strength of the connecting portion 32. In other embodiments, the middle portion 321, the first bending portion 323 and the second bending portion 322 may also be separately provided, and the first bending portion 323, the middle portion 321 and the second bending portion 322 are connected in sequence.

[0075] See also Figure 1 as well as Figures 3 to 7 It is understood that the second bending portion 322 is U-shaped, and the extension direction of the middle portion 321 is perpendicular to the second guide plate 2; the first bending portion 323 includes a first bending section 3231 and a second bending section 3232, and the two ends of the first bending section 3231 are respectively connected to the middle portion 321 and the second bending section 3232, and the bending angle of the first bending section 3231 is 90 degrees, and the end of the second bending section 3232 away from the first bending section 3231 is connected to the verification section 31, and the bending angle of the second bending section 3232 is α, α<90°. Specifically, the U-shaped opening of the second bending portion 322 faces the second guide plate 2, so that the extension direction of the middle portion 321 is perpendicular to the second guide plate 2. In addition, the bending angle of the first bending section 3231 is 90 degrees, one end of the first bending portion 323 is connected to the middle portion 321, and the other end of the first bending portion 323 is bent in a direction close to the first guide plate 1. The bending angle of the second bending section 3232 is α, and the second bending section 3232 bends from the other end of the first bending section 323 toward the direction close to the first guide plate 1. The end of the second bending section 3232 away from the first bending section 3231 is connected to the verification section 31, so that the extension direction of the first bending section 3231 is parallel to the second guide plate 2, and the extension direction of the second bending section 3232 is not perpendicular to the second guide plate 2, so that the line connecting the center of the verification section 31 and the center of the positioning section 7 is not perpendicular to the surface of the second guide plate 2.

[0076] In this embodiment, since the first guide plate 1 and the second guide plate 2 are fitted together, the line connecting the center of the verification portion 31 and the center of the positioning portion 7 is not perpendicular to the surface of the first guide plate 1. That is, in the vertical direction, the projection of the verification portion 31 does not overlap with the projection of the positioning portion 7. Specifically, the extension direction of the middle portion 321 is perpendicular to the first guide plate 1, and the end of the middle portion 321 away from the second bending portion 322 exceeds the height of the positioning portion 7 in the vertical direction, the first bending section 3231 is bent from the end of the middle portion 321 away from the second bending portion 322 to the direction close to the first guide plate 1, and the second bending section 3232 is bent from the end of the first bending section 3231 away from the middle portion 321 to the direction close to the first guide plate 1, and finally the height of the verification portion 31 in the vertical direction is higher than the height of the positioning portion 7. After the osteotomy is completed, when the first guide plate 1 moves to the preset position relative to the second guide plate 2, the verification portion 31 cooperates with the positioning portion 7 to verify the correction angle after the osteotomy.

[0077] In specific use, the preset angle of rotation of the first guide plate 1 relative to the second guide plate 2 is 90°-α, that is, the angle of osteotomy correction is complementary to α.

[0078] In this embodiment, the verification part 31, the first bending section 3231, the second bending section 3232, the middle part 321 and the second bending section 322 are integrally formed, thereby improving the structural strength of the verification part 3. In other embodiments, the verification part 31, the first bending section 3231, the second bending section 3232, the middle part 321 and the second bending section 322 can also be arranged separately and connected in sequence according to the verification part 31, the first bending section 3231, the second bending section 3232, the middle part 321 and the second bending section 322.

[0079] like Figure 1 as well as Figures 3 to 7 As shown, one of the verification part 31 and the positioning part 7 includes a convex part 8 and the other includes a concave part 9, and the convex part 8 and the concave part 9 are arranged opposite to each other and matched. Specifically, the first guide plate 1 is connected to the upper bone of the opening, and the second guide plate 2 is connected to the lower bone of the opening. After osteotomy, the upper bone of the opening and the first guide plate 1 are moved upward, or the lower bone of the opening and the second guide plate 2 are moved downward, so that the convex part 8 moves toward the surface close to the concave part 9, or the concave part 9 moves toward the surface close to the convex part 8. When the osteotomy correction angle reaches a preset value, the convex part 8 extends into the concave part 9, and the inner surface of the concave part 9 fits with the outer surface of the convex part 8, so as to achieve the matching of the verification part 31 and the positioning part 7. In addition, through the matching of the convex part 8 and the concave part 9, the mutual limitation of the verification piece 3 and the first guide plate 1 and the second guide plate 2 is achieved, the matching surface of the verification piece 3 and the first guide plate 1 is increased, and the stability and reliability of the positioning of the first guide plate 1 by the verification piece 3 is improved. In addition, the above structural form has the characteristic of convenient matching.

[0080] In this embodiment, the verification portion 31 includes a convex portion 8, and the positioning portion 7 includes a concave portion 9. In other words, the end of the second bending section 3232 away from the first bending section 3231 is connected to the protrusion, and the concave portion 9 is provided on the first guide plate 1. In other embodiments, the verification portion 31 may also include a concave portion 9, and the positioning portion 7 may include a convex portion 8.

[0081] There is a preset vertical distance between the verification part 31 and the surface of the first guide plate 1 on which the positioning part 7 is provided, and the preset vertical distance is equal to the vertical distance that the positioning part 7 moves toward the verification part 31 when the first guide plate 1 moves to the preset position relative to the second guide plate 2; wherein at the preset position, the axis of the verification part 31 coincides with the axis of the positioning part 7. Specifically, there is a distance difference between the verification part 31 and the positioning part 7 in both the vertical and horizontal directions. Since the preset vertical distance is equal to the vertical distance that the positioning part 7 moves toward the verification part 31 when the first guide plate 1 moves to the preset position relative to the second guide plate 2, there is no height difference between the verification part 31 and the positioning part 7 in the vertical direction at the preset position. The axis of the verification part 31 coincides with the axis of the positioning part 7, so that there is no distance difference between the verification part 31 and the positioning part 7 in the horizontal direction. With the above structure, when the first guide plate 1 moves to a preset position relative to the second guide plate 2 , there is no height difference between the verification part 31 and the positioning part 7 in both the vertical and horizontal directions, so that the verification part 31 can cooperate with the positioning part 7 .

[0082] In this embodiment, the upper surface where the checking portion 31 and the connecting portion 32 meet is configured as a checking surface. When the first guide plate 1 moves to a preset position relative to the second guide plate 2 , the checking surface is flush with the surface of the first guide plate 1 .

[0083] like Figure 1 to Figure 2 as well as Figure 5As shown, one end of the first guide plate 1 close to the second guide plate 2 and one end of the second guide plate 2 close to the first guide plate 1 both have a mating surface 6, the mating surface 6 includes a first plane 61 and a second plane 62, the first plane 61 and the second plane 62 are connected, and the first plane 61 and the second plane 62 are set at an angle; an osteotomy groove is constructed between the two mating surfaces 6; the osteotomy guiding device 100 also includes a connecting column 5, both ends of the connecting column 5 are respectively connected to the two mating surfaces 6, so that a fixed connection relationship is formed between the two mating surfaces 6. With the above-mentioned structural form, the first guide plate 1 and the second guide plate 2 both adopt a V-shaped three-dimensional structure, which is convenient for them to quickly fit with the patient's bone surface during surgery, so that the first guide plate 1 and the second guide plate 2 can be quickly pushed into the fitting position, ensuring the positioning speed; at the same time, the first guide plate 1 and the second guide plate 2 are provided with corresponding first planes 61 and second planes 62 according to the correction angle of the knee joint axis, which is convenient for the doctor to quickly and accurately locate the osteotomy position and its depth during surgery, thereby improving the osteotomy accuracy, getting rid of the dependence of osteotomy surgery on the doctor's experience, reducing the difficulty of the surgery and improving the surgical effect, while also reducing the number of fluoroscopy times during osteotomy surgery, greatly reducing intraoperative radiation, ensuring the health of doctors and patients, and reducing surgery time.

[0084] like Figure 1 to Figure 2 As shown, in the present embodiment, the osteotomy groove includes a transverse osteotomy groove 14 and an ascending osteotomy groove 15, and the transverse osteotomy groove 14 is connected to the ascending osteotomy groove 15. The first guide plate 1 and the second guide plate 2 are connected together by setting at least one connecting column 5 on the osteotomy groove to form the entire guide plate. The first guide plate 1 and the second guide plate 2 are provided with a boss of a certain thickness near the osteotomy area, so that the overall arrangement of the guide plate is a V-shaped three-dimensional structure. Before osteotomy, the connecting column 5 is removed, and at this time the first guide plate 1 can move relative to the second guide plate 2 to realize the calibration of the correction angle. In addition, an osteotomy depth prompt number is provided in the osteotomy groove to ensure the accuracy of osteotomy and reduce the difficulty and time of the operation.

[0085] In specific use, the first plane 61 and the second plane 62 are arranged at an obtuse angle. In special cases, the angle between the first plane 61 and the second plane 62 can also be a right angle or an acute angle. No specific limitation is made here on the angle between the first plane 61 and the second plane 62.

[0086] like Figure 1 , Figure 3 to Figure 4 as well as Figure 6 to Figure 7 As shown, the convex part 8 is in the shape of a hemisphere, and the concave part 9 is a concave hemispherical surface. With the above structure, the upper surface of the hemispherical shape fits with the inner surface of the concave hemispherical surface, which increases the matching area between the verification piece 3 and the first guide plate 1, thereby improving the stability and reliability of the verification piece 3 positioning the first guide plate 1.

[0087] In specific implementation, except that the shape of the convex portion 8 is hemispherical and the shape of the concave portion 9 is a concave hemispherical surface, the present invention provides the following feasible implementation modes in the following content, but the protection scope of the present invention should not be limited to the following implementation modes.

[0088] Example 2

[0089] like Figure 8 and Fig. 9 As shown, the shape of the convex portion 8 is a prism or a frustum, and the side and upper surface of the prism or frustum are adapted to the surface of the concave portion 9. In this embodiment, the prism can be in the form of a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, a heptagonal prism or an octagonal prism; it can also be in the form of a cube and a cuboid. That is, the prism can be a regular prism or an irregular prism. In other embodiments, the convex portion 8 can also be in the form of a cylinder, a prism, a cone or a pyramid, as long as the convex portion 8 and the concave portion 9 can be adapted and convenient for observation.

[0090] In this embodiment, the upper bottom surface mentioned above refers to the bottom surface of the geometric structure of the prism or frustum itself with a smaller area; the upper bottom surface is the bottom surface that contacts the convex part and the concave part when they are matched.

[0091] In a specific implementation, in addition to the above method in which the verification portion 31 includes the convex portion 8 and the positioning portion 7 includes the concave portion 9, other methods may also be used.

[0092] Example 3

[0093] like Figure 8 and Fig. 9 As shown, the verification part 31 includes a protrusion 11, and the positioning part 7 includes a surface on the first guide plate 1 that matches the protrusion, and one end of the protrusion 11 close to the surface is a plane. Specifically, the first guide plate 1 is connected to the upper bone of the opening, and the second guide plate 2 is connected to the lower bone of the opening. After osteotomy, the upper bone of the opening and the first guide plate 1 are moved up, or the lower bone of the opening and the second guide plate 2 are moved down, so that the protrusion 11 moves toward the surface close to the first guide plate 1, or the first guide plate 1 moves toward the surface close to the protrusion 11, so that the protrusion 11 fits with the surface of the first guide plate 1, so that the verification piece 3 and the first guide plate 1 and the second guide plate 2 can also limit each other. The above-mentioned structural form is adopted to ensure the accuracy of the osteotomy correction angle, while reducing the difficulty of the operation, reducing the operation time, and improving the success rate of the operation.

[0094] In this embodiment, the protrusion 11 is in a cubic shape. In other embodiments, the shape of the protrusion 11 can be adjusted according to actual needs. It only requires that the surface of the protrusion 11 close to the first guide plate 1 is flat. The specific shape of the protrusion 11 is not limited here.

[0095] In specific implementation, in addition to the other end of the connecting portion 32 being fixedly connected to the second guide plate 2, the present invention provides the following feasible implementation modes in the following content, but the protection scope of the present invention should not be limited to the following implementation modes.

[0096] Example 4

[0097] like Figures 10 to 14 As shown, the osteotomy guide device 100 also includes a buckle 12 and a slot 13, the buckle 12 is used to engage with the slot 13, one of the buckle 12 and the slot 13 is provided at one end of the connecting portion 32, and the other is provided on the second guide plate 2. In this embodiment, a buckle 12 is provided at one end of the connecting portion 32, and a slot 13 is provided on the second guide plate 2, so that the second guide plate 2 and the connecting portion 32 are connected through the cooperation of the buckle 12 and the slot 13, so that if one of the second guide plate 2 and the connecting portion 32 is damaged, it is only necessary to replace the damaged second guide plate 2 or the connecting portion 32 to achieve normal use, which has the characteristic of cost saving. In addition, the above-mentioned structural form also facilitates the processing of the connecting portion 32 and the second guide plate 2.

[0098] In specific use, combined with Figure 12 to Figure 14 It is understood that the second guide plate 2 is provided with a slot 13, and the slot 13 has a snap-fit ​​surface that matches the buckle 12. The buckle 12 includes a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are both connected to one end of the connecting portion 32. The surface of the first connecting plate away from the second connecting plate and the surface of the second connecting plate away from the first connecting plate are respectively provided with a first protrusion and a second protrusion, and the first protrusion and the second protrusion are arranged at one end away from the connecting portion 32. When the buckle 12 is matched with the slot 13, the buckle 12 extends into the slot 13 from the lower end of the slot 13, and at this time, the snap-fit ​​surface contacts with the first protrusion and the second protrusion, and squeezes the first protrusion and the second protrusion, so that the gap between the first connecting plate and the second connecting plate becomes smaller. The buckle 12 continues to move upward, and the first protrusion and the second protrusion are separated from the snap-fit ​​surface, and the gap between the first connecting plate and the second connecting plate returns to the initial size. At this time, the lower surfaces of the first protrusion and the second protrusion are in contact with the snap-fit ​​surface, thereby realizing the connection between the buckle 12 and the slot 13.

[0099] In order to increase the connection strength between the first connecting plate and the second connecting plate and the connecting part 32 respectively, the verification piece 3 preferably also includes a boss, the diameter of the boss is larger than the diameter of the connecting part 32, and the first connecting plate and the second connecting plate are connected to one end of the connecting part 32 via the boss.

[0100] Specifically, before osteotomy, the slot 13 is not connected to the buckle 12, and the second guide plate 2 is separated from the verification piece 3. After osteotomy, the buckle 12 and the slot 13 are connected together, and the first guide plate 1, the second guide plate 2 and the verification piece 3 are connected into a whole, and then the movement of the tibia and the correction angle are verified. The above structural form can reduce the influence of the verification piece 3 on the transverse osteotomy, and the above structural form has the characteristics of convenient positioning and assembly.

[0101] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An osteotomy guide device (100), characterized in that: The osteotomy guiding device (100) is used for guiding osteotomy, and comprises a first guide plate (1), a second guide plate (2) and a verification piece (3), wherein the verification piece (3) comprises a verification portion (31) and a connecting portion (32), a positioning portion (7) is provided on the surface of the first guide plate (1), the verification piece (3) is fixedly connected to the second guide plate (2) via one end of the connecting portion (32), the verification portion (31) is provided at the other end of the connecting portion (32), and the positioning portion (7) is used to match the verification portion (31) to verify the correction angle after osteotomy.

2. The osteotomy guide device (100) according to claim 1, characterized in that: The connecting portion (32) comprises a middle portion (321), a first bending portion (323) and a second bending portion (322); the middle portion (321) is rod-shaped and connected to one end of the first bending portion (323) and the second bending portion (322); the other end of the first bending portion (323) is connected to the checking portion (31); and the other end of the second bending portion (322) is fixedly connected to the second guide plate (2).

3. The osteotomy guide device (100) according to claim 2, characterized in that: The second bending portion (322) is U-shaped, and the extension direction of the middle portion (321) is perpendicular to the second guide plate (2); the first bending portion (323) comprises a first bending section (3231) and a second bending section (3232), the two ends of the first bending section (3231) are respectively connected to the middle portion (321) and the second bending section (3232), the bending angle of the first bending section (3231) is 90 degrees, and the end of the second bending section (3232) away from the first bending section (3231) is connected to the verification portion (31), and the bending angle of the second bending section (3232) is α, α<90°.

4. The osteotomy guide device (100) according to claim 1, characterized in that: One of the verification part (31) and the positioning part (7) includes a convex part (8) and the other includes a concave part (9), and the convex part (8) and the concave part (9) are arranged opposite to each other and are matched with each other.

5. The osteotomy guide device (100) according to claim 4, characterized in that: The convex portion (8) is in the shape of a hemisphere, and the concave portion (9) is a concave hemispherical surface.

6. The osteotomy guide device (100) according to claim 4, characterized in that: The convex portion (8) is a prism or a frustum, and the side surface and the upper bottom surface of the prism or the frustum are both compatible with the surface of the concave portion (9).

7. The osteotomy guide device (100) according to claim 1, characterized in that: There is a preset vertical distance between the verification portion (31) and the surface of the first guide plate (1) on which the positioning portion (7) is provided, and the preset vertical distance is equal to the vertical distance that the positioning portion (7) moves toward the verification portion (31) when the first guide plate (1) moves to a preset position relative to the second guide plate (2); at the preset position, the axis of the verification portion (31) coincides with the axis of the positioning portion (7).

8. The osteotomy guide device (100) according to claim 1, characterized in that: The checking portion (31) comprises a protruding portion (11), the positioning portion (7) comprises a surface on the first guide plate (1) that matches the protruding portion, and one end of the protruding portion (11) close to the surface is a plane.

9. The osteotomy guide device (100) according to claim 1, characterized in that: The osteotomy guide device (100) further comprises a buckle (12) and a slot (13), wherein the buckle (12) is used for engaging with the slot (13), and one of the buckle (12) and the slot (13) is arranged at one end of the connecting portion (32), and the other is arranged on the second guide plate (2).

10. The osteotomy guide device (100) according to claim 1, characterized in that: One end of the first guide plate (1) close to the second guide plate (2) and one end of the second guide plate (2) close to the first guide plate (1) both have a matching surface (6), the matching surface (6) comprises a first plane (61) and a second plane (62), the first plane (61) and the second plane (62) are connected, and the first plane (61) and the second plane (62) are arranged at an angle; an osteotomy groove is constructed between the two matching surfaces (6); The osteotomy guiding device (100) further comprises a connecting column (5), the two ends of which are respectively connected to the two matching surfaces (6) so as to form a fixed connection relationship between the two matching surfaces (6).

Images