Osteotomy osteotome and osteotome deformation monitoring method

Abstract

The invention belongs to the technical field of orthopedic medical instruments, and particularly relates to an osteotomy osteotome and an osteotome deformation monitoring method.The osteotomy osteotome comprises a knife handle and a knife head, and a deformation signal collecting unit is arranged in the knife head and used for collecting deformation signals of the osteotome; and the visualization system is used for displaying the deformation state of the osteotome in real time according to the deformation signal. According to the osteotomy osteotome provided by the scheme, the deformation signal monitoring unit is arranged in the osteotome head, whether the osteotome deforms or not under the invisible condition can be detected, through combination of the osteotome and the strain gauge, only the value of the strain gauge in the osteotome needs to be measured, the value can represent the overall strain of the osteotome, the strain value of the osteotome is closely related to the deformation, and therefore the osteotome deformation can be accurately detected. Therefore, the deformation of the invisible osteotome can be detected in an operation.

Description

Technical Field

[0001] The invention belongs to the field of orthopedic medical instruments, and in particular relates to an osteotomy bone knife and a bone knife deformation monitoring method. Background Art

[0002] Developmental dysplasia of the hip (DDH) is one of the important pathogenic factors causing secondary hip osteoarthritis. Periacetabular osteotomy (PAO) increases the contact area between the femoral head and the acetabulum by osteotomy, thereby correcting limb deformities and relieving pain. This type of surgery is difficult, the osteotomy site and the bone knife are not easy to show, which leads to errors in the direction of osteotomy. The bone knife is very easy to deform and bend. It is necessary to perform X-ray fluoroscopy or remove the bone knife for inspection multiple times during the operation. However, intraoperative fluoroscopy is not only time-consuming and increases radiation damage to patients and doctors, but also two-dimensional imaging is difficult to fully express the degree of correction. Multiple removals of the bone knife are very likely to damage surrounding important nerves, blood vessels and other tissues. Surgeons often need to rely on experience to judge the direction and depth of the bone knife, resulting in high risks and long learning curves for this type of surgery. In addition, there is a lack of direct connection between preoperative planning and intraoperative operation, making it difficult to meet the requirements of preoperative planning. Therefore, although the operation has been performed for more than 30 years, it has not been widely carried out, and there are only a handful of doctors in China who can carry out such operations. If the operation is to be widely carried out and successful, it is necessary to fully understand the degree of hip deformity, accurately locate the osteotomy path, and promptly determine whether the bone knife is bent. This is also the key to the success of PA0 surgery. The current problem is that doctors often judge whether the bone knife is deformed based on their own perception and accumulated experience to ensure the accuracy of the osteotomy route, which also makes it difficult for young doctors to start. In order to monitor whether the bone knife is deformed during osteotomy surgery, most current scholars conduct research and development on the pelvis and the point of action of the bone knife. In some existing schemes for monitoring the deformation of the bone knife, intraoperative CT is used to monitor whether the bone knife is deformed. The radiation is large, the CT effect coincides with the osteotomy site, artifacts are prone to occur, and the intraoperative operation is cumbersome, the timeliness is low, and multiple CT scans are prone to health problems for doctors and patients. Some also adopt the method of adding external guide plate measurement to control the osteotomy distance to achieve accurate osteotomy of the bone knife. The guide plate outside the bone knife will increase the human incision and there is a risk of intraoperative bleeding. Existing research has not provided a better monitoring method for the bending and deformation of the bone knife during the actual osteotomy process. In addition, the material, shape and size of the bone knife itself need to be considered in combination with the actual situation, which will inevitably cause the bone knife to deform to a certain extent. If the deformation of the bone knife cannot be monitored in time, it may cause the bone knife to deviate from the established osteotomy route and damage the surrounding nerves and tissues. Summary of the invention

[0003] The purpose of the present invention is to provide an osteotomy bone knife and a bone knife deformation monitoring method to solve the problem in the prior art that the deformation amount of the osteotomy bone knife during the osteotomy process is not visible.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A first aspect of the present invention provides an osteotomy surgical osteotome, comprising:

[0006] Handle,

[0007] A knife head, wherein a deformation signal acquisition unit is arranged inside the knife head, and the deformation signal acquisition unit is used to collect the deformation signal of the bone knife;

[0008] A visualization system is used to display the deformation state of the bone knife in real time according to the deformation signal.

[0009] Furthermore, a first mounting groove is provided on the cutter head, and the deformation signal acquisition unit is installed in the first mounting groove and is sealed by a bone cutter cover.

[0010] Furthermore, the deformation signal acquisition unit includes a plurality of strain gauges, and the plurality of strain gauges are connected by strain gauge wires;

[0011] The first installation groove is arranged along the length direction of the cutter head, and the plurality of strain gauge flowers are arranged in the first installation groove and arranged along the length direction of the cutter head.

[0012] Furthermore, a plurality of second mounting grooves are arranged in the first mounting groove, and the plurality of second mounting grooves are arranged along the length direction of the first mounting groove; a strain rosette is correspondingly installed in each of the second mounting grooves;

[0013] The second installation groove is arranged at the groove bottom of the first installation groove, and a wire groove for the strain gauge wire to pass through is arranged between two adjacent second installation grooves.

[0014] Furthermore, a strain gauge wire output hole is provided on the bone knife cover, and the deformation signal acquisition unit is wired to a visualization system outside the bone knife through the strain gauge wire output hole.

[0015] Furthermore, the strain rosette is a triaxial 45° strain rosette.

[0016] Furthermore, the positions of the first installation slot and the second installation slot are determined as follows:

[0017] A bone knife model and a pelvic model are established, and a spatial coordinate system is established at the blade of the bone knife model;

[0018] Meshing the bone knife model based on the spatial coordinate system;

[0019] Finite element analysis was performed based on the bone knife model, pelvic model and divided grids to simulate the actual changes during osteotomy with the bone knife and obtain the strain values ​​of the nodes on the surface of the bone knife blade.

[0020] By performing data analysis on the strain value, a plurality of nodes that can best characterize the overall strain value of the bone cutter are obtained, the position of the first installation slot is determined according to the plurality of nodes, and the nodes are used as the second installation slot for installing the strain rosette.

[0021] Furthermore, the visualization system is equipped with a pre-trained strain-deformation mapping prediction model. The deformation signal collected by the deformation signal acquisition unit is input into the strain-deformation mapping prediction model. The strain-deformation mapping prediction model outputs the deformation prediction value of the bone knife and displays it in a pre-constructed finite element model through the visualization system.

[0022] Furthermore, the first end of the knife handle is connected to the knife head, and the second end of the knife handle is provided with a hammering part.

[0023] A second aspect of the present invention provides a bone knife deformation monitoring method, comprising the following steps:

[0024] When using a bone cutter to perform osteotomy, obtain the strain value of the strain rosette each time the bone cutter is hammered;

[0025] The strain value is input as a deformation signal into a pre-trained strain-deformation mapping prediction model, and the strain-deformation mapping prediction model outputs the deformation prediction value of the bone knife, and displays it in a pre-built finite element model through a visualization system, and outputs the deformation of the bone knife in the form of an image.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] The osteotomy bone knife provided in this scheme has a deformation signal monitoring unit set in the knife head, which can detect whether the bone knife is deformed under invisible circumstances. Through the combination of the bone knife and the strain gauge, only the strain gauge value in the bone knife needs to be measured. These values ​​can represent the overall strain of the bone knife, and the strain value of the bone knife is closely related to the deformation, so as to achieve the detection of invisible bone knife deformation during surgery.

[0028] The osteotomy bone knife provided in this solution has a built-in strain gauge, and combines precise modeling and finite element analysis to achieve a dynamic model analysis of the entire osteotomy process that conforms to the actual situation, thereby obtaining a strain value that conforms to the actual situation, and optimizing the slot position of the bone knife and the arrangement of the strain gauge, which can more accurately monitor whether the bone knife has deformed. On the one hand, it solves the problem that the bone knife is invisible during surgery due to the narrow field of vision. The strain gauge inside the bone knife is connected by a wire, and the internal strain gauge value is detected to monitor whether the bone knife has deformed, making the deformation monitoring of the bone knife more convenient and real-time. On the other hand, the strain gauge after the optimized layout can also reflect the overall strain of the bone knife to the greatest extent. The location of the strain gauge is the main force point of the bone knife, and the monitoring of the deformation of the bone knife is more accurate.

[0029] The osteotomy bone knife provided in this solution combines the strain value of the strain gauge with the strain-deformation mapping prediction model in the visualization system, and can further obtain the three-dimensional coordinates of the bone knife before and after deformation, and output it as an image on the visualization system display, which facilitates the surgeon's understanding of the deformation of the bone knife, ensures the accuracy of the osteotomy route, greatly improves the safety of the operation, and enables young doctors to master this type of technology more quickly after planning the osteotomy route, and complete the operation more efficiently and safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0031] In the attached picture:

[0032] Figure 1 Schematic diagram of accurate modeling of bone knife and pelvis in an embodiment of the present invention;

[0033] Figure 2 is a front view of an osteotomy surgical osteotome according to an embodiment of the present invention;

[0034] Figure 3 is a top view of an osteotomy surgical osteotome according to an embodiment of the present invention;

[0035] Figure 4 Schematic diagram of a three-axis 45° strain rosette in an embodiment of the present invention;

[0036] Figure 5 Schematic diagram of the overall structure of the osteotomy surgical bone knife according to an embodiment of the present invention;

[0037] Figure 6 yes Figure 5 The enlarged image at a in the middle;

[0038] Figure 7 Schematic diagram of the position design coordinates of the strain gauge in the embodiment of the present invention

[0039] Figure 8 Schematic diagram of bone knife deformation prediction in an embodiment of the present invention.

[0040] Figure numerals: 1. bone knife model; 2. pelvic model; 3. bone knife cover; 4. strain gauge wire output hole; 5. strain rosette; 6. strain gauge wire; 7. acquisition board; 8. visualization system; 11. knife handle; 12. knife head; 13. first mounting slot; 14. second mounting slot; 15. hammering part. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0042] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Example 1

[0046] An embodiment of the present invention provides a bone knife for osteotomy surgery, in which a strain gauge is built inside the bone knife, and the deformation of the bone knife is monitored by detecting the strain gauge. The strain value obtained by the precise modeling of the bone knife and the pelvis and the finite element simulation model is used for data analysis, and the position, angle and direction of the strain gauge attached to the bone knife are optimized according to the overall structure of the bone knife. At this time, the strain value at the point where the strain gauge is located can effectively reflect the deformation of the bone knife, realizing intelligent bone knife design. The bone knife containing the strain gauge is subjected to finite element simulation again to obtain the strain value of the strain gauge node and the overall three-dimensional coordinates of the bone knife before and after deformation, providing data input for the prediction mapping of a limited number of strains to overall deformation based on deep learning in the visualization system, and further accurately monitoring the deformation of the bone knife.

[0047] like Figure 1 to Figure 3 As shown, an osteotomy surgical bone knife comprises:

[0048] Tool handle 11, tool head 12 and visualization system 8;

[0049] A deformation signal acquisition unit is provided inside the cutter head 12, and the deformation signal acquisition unit is used to acquire the deformation signal of the bone cutter; the visualization system 8 is used to display the deformation state of the bone cutter in real time according to the deformation signal.

[0050] The osteotomy bone knife proposed in this scheme has a built-in deformation signal acquisition unit. When the bone knife is deformed, the bone knife deformation signal is measured, thereby monitoring whether the bone knife is deformed, so as to efficiently solve the existing problems of damage to peripheral nerves and blood vessels caused by the doctor's inability to monitor the deformation of the bone knife in time; the deformation of the bone knife is monitored simply, with high accuracy and in real time.

[0051] like Figure 5 As shown, in one embodiment, a first mounting groove 13 is provided on the cutter head 12 , and the deformation signal acquisition unit is installed in the first mounting groove 13 and is sealed by the bone cutter cover 3 .

[0052] In one embodiment, the deformation signal acquisition unit includes a plurality of strain gauges 5, and the plurality of strain gauges 5 are connected to each other through strain gauge wires 6; the first mounting groove 13 is arranged along the length direction of the cutter head 12, and the plurality of strain gauges 5 are arranged in the first mounting groove 13 and arranged along the length direction of the cutter head 12.

[0053] like Figure 6 As shown, specifically, a plurality of second mounting grooves 14 are arranged in the first mounting groove 13, and the plurality of second mounting grooves 14 are arranged along the length direction of the first mounting groove 13; a strain gauge flower 5 is correspondingly installed in each second mounting groove 14; the second mounting groove 14 is arranged at the bottom of the first mounting groove 13, and a wire groove for the strain gauge wire 6 to pass through is arranged between two adjacent second mounting grooves 14.

[0054] In one embodiment, a strain gauge wire output hole 4 is provided on the bone cutter cover 3, and the deformation signal acquisition unit is wiredly connected to a visualization system 8 outside the bone cutter through the strain gauge wire output hole 4.

[0055] As an example of the above embodiment, the strain rosette 5 is a triaxial 45° strain rosette. A limited number of metal resistance strain gauges are selected and placed in the main stress points of the bone knife in an embedded manner. A triaxial 45° strain rosette is selected for each point strain gauge. The strain gauge is connected by a wire through a wire hole and led out. The strain gauge deforms with the deformation of the bone knife. Whether the bone knife body is deformed is monitored by detecting the strain gauge value.

[0056] like Figure 4 As shown, in one embodiment, the strain rosette 5 adopts a three-axis 45° strain rosette. By stacking three strain gauges at 45° in pairs and fixing them with adhesive, the geometric shape of the strain rosette is completely enclosed by the preset slot of the bone knife, and the strain gauges are connected by strain gauge wires 6.

[0057] like Figure 2 As shown, it can be understood that after the strain gauge is placed, the bone knife cover 3 is tightly fastened on the bone knife. When the bone knife is deformed, the internal strain gauge will deform as the bone knife bends, and only the strain gauge wire 6 is connected to the outer end through the strain gauge wire output hole 4, and the external acquisition device can collect strain data to monitor the deformation of the bone knife.

[0058] In one embodiment, the bone knife is made of 316 stainless steel, the strain gauge is of a filled type, the bone knife cover 3 is tightly buckled on the bone knife, and is only connected to the outer end through a wire hole, and the overall waterproofness and corrosion resistance are good.

[0059] In one embodiment, the positions of the first installation groove 13 and the second installation groove 14 are determined as follows:

[0060] A bone knife model 1 and a pelvic model 2 are established, and a spatial coordinate system is established at the blade of the bone knife model 1; the bone knife model 1 is meshed based on the spatial coordinate system; a finite element analysis is performed based on the bone knife model 1, the pelvic model 2 and the divided meshes to simulate the actual changes during osteotomy with the bone knife and obtain the strain values ​​of the nodes on the surface of the bone knife blade; by performing data analysis on the strain values, a plurality of nodes that can best represent the overall strain value of the bone knife are obtained, the position of the first mounting groove 13 is determined based on the plurality of nodes, and the nodes are used as the second mounting groove 14 for installing the strain flower 5.

[0061] The above scheme is based on integrated precise modeling and full-dynamic finite element simulation of osteotomy. The strain value of the bone knife node that conforms to the actual situation is obtained, and the data analysis method is used to find the main nodes of strain change, which are used as the place to stack the strain gauges. The middle position of the blade is selected to open an installation groove, and the direction, angle, and position of the strain gauge buried in the bone knife are optimized according to the shape of the bone knife and the force process. The structural design of the bone knife for osteotomy surgery that can monitor the deformation of the bone knife blade is completed.

[0062] As an example of the above embodiment, the first mounting groove 13 and the second mounting groove 14 are used to place strain gauges. According to the selection of the position of the strain gauge, a coordinate system at the blade of the bone knife is established, the bone knife is divided into 50*50*1000 grids, and six positions for placing the strain gauges are selected.

[0063] like Figure 7 As shown in FIG. 1 , in one embodiment, six main stress points of the osteotome are selected, and strain gauges are placed at the stress points, as shown in FIG. Figure 7 The positions of the strain gauges shown are: ①-1, 8, 3; ②-1, 11, 3; ③-1, 14, 3; ④-1, 17, 3; ⑤-1, 20, 3; ⑥-1, 23, 3.

[0064] In the selection of slots for the bone knife blade, six positions are selected for slotting, the strain gauge is separated from the outside world by the bone knife cover 3, a hole is opened on the bone knife cover 3 to allow the strain gauge wire 6 to be led out, and the strain gauge wire 6 connected to the strain gauge is connected to the outside through the strain gauge wire output hole 4.

[0065] In one embodiment, the position of the strain gauge is selected by using a data analysis method for the strain value. The bone knife is at the thinner end of the blade at 23 and 30 on the Z axis. Since the blade is thinner here, the slotting here will easily affect the rigidity of the bone knife body and make the bone knife more easily deformed, so it is not selected; the Z axis 8 and 23 are the main deformation points, which are the main stress points of the bone knife. The slotting here does not affect the overall rigidity of the bone knife, and the monitoring result is more accurate. The strain gauge is selected here; the Z axis 0 and 8 are the thicker ends of the blade. Since it is close to the handle of the bone knife, it is not easy to deform here, so the strain gauge is not selected here.

[0066] In a further embodiment, the present application embodiment selects the main stress-bearing part of the osteotome in the selection of the position of the strain gauge. Figure 1As shown, the integrated accurate modeling and finite element simulation analysis of bone cutter and pelvis is carried out. By studying the mechanical factors in the process of the action of heterogeneous materials and bone cutters, the distribution of cortical bone and cancellous bone is divided, the overall nodes of the bone cutter are numbered by meshing, and the boundary conditions under different working conditions are set to simulate the real changes during bone cutter osteotomy, and the strain values ​​of the nodes on the surface of the bone cutter blade are obtained. By analyzing these multi-working condition strain values ​​using the TOPSIS data analysis method, the six nodes that best characterize the overall strain value of the bone cutter are obtained, and these nodes are selected as the pre-positioning positions of the strain gauges. The strain gauges are placed with the nodes as the center. In this embodiment, a uniaxial strain gauge is selected, and the position of the strain gauge is adjusted according to the width, length, thickness of the bone cutter and the number of nodes covered by the strain gauge. According to the size of the transverse stress, torsional stress and vertical stress of the bone cutter, the strain gauge is adjusted to be three-axis and the angle is 45°. After selecting the placement position, the bone cutter is slotted. The strain gauges at these positions can react to the overall strain value of the bone cutter to the maximum extent, which is the main stress point when the bone cutter is deformed.

[0067] For example, under different working conditions and simulations of different forces, the strain values ​​of these six nodes are always larger than the strain values ​​of all nodes. These points are selected to place the center of the strain gauge here.

[0068] In one embodiment, the visualization system 8 is equipped with a pre-trained strain-deformation mapping prediction model. The deformation signal collected by the deformation signal acquisition unit is input into the strain-deformation mapping prediction model. The strain-deformation mapping prediction model outputs the deformation prediction value of the bone knife, and is displayed in the pre-built finite element model through the visualization system. The three-dimensional coordinates of the bone knife before and after deformation are obtained by the strain-deformation mapping prediction model based on deep learning, and the deformation of the bone knife is intuitively displayed in the visualization system display in combination with the visualization system.

[0069] In one embodiment, the first end of the knife handle 11 is connected to the knife head 12 , and the second end of the knife handle 11 is provided with a hammering part 15 . When the bone knife is used, the hammering part 15 is used to perform hammering bone cutting.

[0070] Example 2

[0071] A bone knife deformation monitoring method comprises the following steps:

[0072] S1. When using a bone cutter to perform osteotomy, obtain the strain value of the strain rosette 5 each time the bone cutter is hammered;

[0073] S2. Input the strain value as a deformation signal into a pre-trained strain-deformation mapping prediction model. The strain-deformation mapping prediction model outputs the deformation prediction value of the bone knife and displays it in a pre-built finite element model through a visualization system, and outputs the deformation of the bone knife in the form of an image.

[0074] In the above scheme, after each hammering by the surgeon, the strain gauge will be deformed due to the bending of the bone knife. The strain gauge acquisition device can detect the deformation value of the strain gauge at all times and input it into the visualization system. The visualization system quickly outputs an image of each deformation of the bone knife to achieve dynamic and real-time performance.

[0075] Specifically, when the surgeon uses the bone knife to perform osteotomy, the bone knife is inserted into the patient's body. At this time, the shape of the bone knife can no longer be seen directly, and only the collection device is connected to the strain gauge inside the bone knife through the strain gauge wire 6. When the surgeon hammers the bone knife, the bone knife is deformed. At this time, the position of the strain gauge after the optimized layout is the main force point of the bone knife. The strain gauge is deformed due to the deformation of the bone knife. The collection device can immediately measure the strain gauge reaction value by connecting the strain values ​​of multiple strain gauges 5, thereby determining whether the bone knife is deformed. After each hammering by the surgeon, the collection device can quickly detect the change in the strain value. Figure 8 As shown, the strain value of the strain gauge is collected by the acquisition board 7 and input into the visualization system 8. The display of the visualization system 8 can output the deformation of the bone knife in the form of an image, so as to realize the monitoring of the deformation of the bone knife blade efficiently, accurately and in real time. The surgeon can observe the deformation of the bone knife after each hammering intuitively and from multiple angles on the visualization system display.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A bone knife for osteotomy, characterized in that: include: Handle (11), A knife head (12), wherein a deformation signal acquisition unit is arranged inside the knife head (12), and the deformation signal acquisition unit is used to collect the deformation signal of the bone knife; A visualization system (8) is used to display the deformation state of the osteotome in real time according to the deformation signal.

2. The osteotomy surgical osteotome according to claim 1, characterized in that: The cutter head (12) is provided with a first installation groove (13), and the deformation signal acquisition unit is installed in the first installation groove (13) and is sealed by the bone cutter cover (3).

3. The osteotomy surgical osteotome according to claim 2, characterized in that: The deformation signal acquisition unit comprises a plurality of strain rosettes (5), and the plurality of strain rosettes (5) are connected via strain gauge wires (6); The first installation groove (13) is arranged along the length direction of the cutter head (12), and a plurality of strain gauge flowers (5) are arranged in the first installation groove (13) and arranged along the length direction of the cutter head (12).

4. The osteotomy surgical osteotome according to claim 3, characterized in that: A plurality of second mounting grooves (14) are arranged in the first mounting groove (13), and the plurality of second mounting grooves (14) are arranged along the length direction of the first mounting groove (13); a strain gauge flower (5) is correspondingly installed in each of the second mounting grooves (14); The second installation groove (14) is arranged at the groove bottom of the first installation groove (13), and a wire groove for the strain gauge wire (6) to pass through is arranged between two adjacent second installation grooves (14).

5. The osteotomy surgical osteotome according to claim 2, characterized in that: The bone cutter cover (3) is provided with a strain gauge wire output hole (4), and the deformation signal acquisition unit is wiredly connected to a visualization system outside the bone cutter via the strain gauge wire output hole (4).

6. The osteotomy surgical osteotome according to claim 2, characterized in that: The strain rosette (5) is a triaxial 45° strain rosette.

7. The osteotomy surgical osteotome according to claim 4, characterized in that: The positions of the first mounting groove (13) and the second mounting groove (14) are determined as follows: A bone knife model and a pelvic model are established, and a spatial coordinate system is established at the blade of the bone knife model; Meshing the bone knife model based on the spatial coordinate system; Finite element analysis was performed based on the bone knife model, pelvic model and divided grids to simulate the actual changes during osteotomy with the bone knife and obtain the strain values ​​of the nodes on the surface of the bone knife blade. By performing data analysis on the strain value, a plurality of nodes that can best characterize the overall strain value of the bone cutter are obtained, the position of the first installation slot (13) is determined based on the plurality of nodes, and the nodes are used as the second installation slot (14) for installing the strain rosette (5).

8. The osteotomy surgical osteotome according to claim 5, characterized in that: The visualization system is equipped with a pre-trained strain-deformation mapping prediction model. The deformation signal collected by the deformation signal acquisition unit is input into the strain-deformation mapping prediction model. The strain-deformation mapping prediction model outputs the deformation prediction value of the bone knife and displays it in a pre-constructed finite element model through the visualization system.

9. The osteotomy surgical osteotome according to claim 1, characterized in that: The first end of the knife handle (11) is connected to the knife head (12), and the second end of the knife handle (11) is provided with a hammering part (15).

10. A bone knife deformation monitoring method, characterized in that: The steps include: When using a bone cutter to perform osteotomy, the strain value of the strain rosette (5) is obtained each time the bone cutter is hammered; The strain value is input as a deformation signal into a pre-trained strain-deformation mapping prediction model, and the strain-deformation mapping prediction model outputs the deformation prediction value of the bone knife, and displays it in a pre-built finite element model through a visualization system, and outputs the deformation of the bone knife in the form of an image.

Images