High-adaptability femur osteotomy guide device

Abstract

The utility model relates to a high-adaptation type femur osteotomy guiding device, which belongs to the technical field of medical instruments and comprises a bone attaching guide plate positioning base, an integrated support frame is fixedly connected to the top of the bone attaching guide plate positioning base, and a visual force line laser indicator is fixedly arranged at the top of the integrated support frame. A vertical force line guide needle device is fixedly arranged at the bottom of the integrated supporting frame, a guide needle is assembled in the vertical force line guide needle device, and the guide needle is matched with an osteotomy guide plate. According to the utility model, the guiding device which is simultaneously provided with the accurate bone-sticking positioning base, the visual force line display and the osteotomy guiding positioning nail is arranged, the accurate positioning of the foundation is completed by utilizing the bone-sticking guide plate positioning base which is attached to the thighbone surface of a patient, and the visual force line of the simulated patient is combined with the osteotomy guide plate which is vertical to the force line of the simulated patient; accurate vertical force line osteotomy is achieved, and the success rate of an operation is greatly guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a highly adaptable femoral osteotomy guiding device. Background Art

[0002] Osteotomy refers to the removal of the necrotic area out of the weight-bearing area of ​​the distal femur. It is mainly used clinically in distal femoral osteotomy in knee replacement. Specific osteotomies include varus or valgus osteotomy, transtrochanteric rotation osteotomy, etc. The most important operation in this operation is to perform osteotomy perpendicular to the force line of the femur itself. Only by ensuring that the osteotomy line is perpendicular to the force line can the patient's femur be used in the normal position after surgery. Therefore, it is extremely important to ensure that the osteotomy line is perpendicular to the force line during femoral osteotomy.

[0003] In the prior art, there is a lack of a guide device that can integrate direct visualization of virtual force lines and provide vertical visualization force lines. There is also a lack of a base device that can simultaneously ensure that the visualization display virtual force line structure can be accurately positioned when assembled to the femur, which leads to errors in the osteotomy direction, making it impossible to restore the normal force line of the femur after femoral osteotomy, resulting in surgical failure. Utility Model Content

[0004] In view of this, the purpose of the utility model is to propose a highly adaptable femoral osteotomy guide device, which solves the problem in the prior art of lacking a device for accurately displaying the force line and accurately positioning the osteotomy guide plate for guiding osteotomy, resulting in the inability to accurately guide osteotomy and ultimately the failure of the operation by providing a guide device that simultaneously has a precise bone positioning base, a visual force line display and an osteotomy guide positioning pin.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A highly adaptable femoral osteotomy guide device comprises a bone guide plate positioning base, the top of the bone guide plate positioning base is fixedly connected to an integrated support frame, a visual force line laser indicator is fixedly provided on the top of the integrated support frame, a vertical force line needle guide is fixedly provided on the bottom of the integrated support frame, a guide needle is assembled inside the vertical force line needle guide, and the guide needle cooperates with the osteotomy guide plate.

[0007] Furthermore, the bone guide plate positioning base is designed based on a three-dimensional model after radiographic imaging of the patient's femur. The bone guide plate positioning base includes an inner veneer and an outer surface, and the inner veneer is the same as the surface of the patient's femur three-dimensional model.

[0008] Furthermore, the integrated support frame includes a fixing column and a supporting plate fixedly arranged on the outer surface, and a hollow groove for the light of the visual force line laser indicator to pass through is arranged in the middle of the supporting plate.

[0009] Furthermore, the top right side of the support plate is connected to the visualized force line laser indicator via an L-shaped connecting rod, and the visualized force line emitted by the visualized force line laser indicator coincides with the actual force line obtained after preoperative three-dimensional modeling analysis of the patient's femur.

[0010] Furthermore, the bottom right side of the support plate is connected to the vertical force line needle guide through a rotating sleeve, and the vertical force line needle guide includes a needle guide hole and a connecting frame. The needle guide hole is fixedly opened on the left and right sides of the connecting frame, and the center line of the needle guide hole is perpendicular to the visualized force line.

[0011] Furthermore, the osteotomy guide plate includes a plate body, a guide knife groove and a guide pin insertion hole, and the connecting line of the guide pin insertion hole is parallel to the guide knife groove.

[0012] The utility model has the following beneficial effects:

[0013] The utility model provides a guide device that is equipped with a precise bone positioning base, a visual force line display and an osteotomy guide positioning nail. It uses a bone guide positioning base that fits the surface of the patient's femur to complete the precise positioning of the foundation, and then combines visual simulation of the patient's force line and an osteotomy guide plate that is perpendicular to the simulated force line to achieve precise vertical force line osteotomy, which greatly guarantees the success rate of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Diagram of the structure of the femur for positioning the guide pin;

[0015] Figure 2 Figure 1. Assembling the osteotomy guide to the femoral structure.

[0016] Figure 3 This is a structural diagram of the guide needle positioning nail insertion device;

[0017] Figure 4 A front view of the guide pin positioning nail insertion device;

[0018] Figure 5 Side view of the nail insertion device for positioning the guide needle;

[0019] Figure 6 Top view of the guide pin positioning device.

[0020] Description of reference numerals:

[0021] 1. Bone guide plate positioning base; 2. Inner veneer; 3. Outer surface; 4. Integrated support frame; 5. Fixed column; 6. Support plate; 7. L-shaped connecting rod; 8. Visual force line laser indicator; 9. Hollow groove; 10. Rotating sleeve; 11. Vertical force line needle guide; 12. Guide needle hole; 13. Connecting frame; 14. Guide needle; 15. Vertical force line needle guide; 16. Plate body; 17. Guide knife groove; 18. Guide needle nail hole; 19. Osteotomy guide plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does 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 cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, 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 the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Reference Figure 1-6The utility model provides an embodiment: a highly adaptable femoral osteotomy guide device, including a bone guide plate positioning base 1, the bone guide plate positioning base is designed according to the model of three-dimensional modeling after the patient's femoral radiography, and the bone guide plate positioning base includes an inner veneer 2 and an outer surface 3, so the inner veneer is the same as the surface of the patient's femoral three-dimensional model, and the two can be completely fitted, and an integrated support frame 4 is fixedly connected to the top of the bone guide plate positioning base, the integrated support frame includes a fixed column 5 and a support plate 6 fixedly arranged on the outer surface, and is connected to a visualization force line laser indicator 8 through an L-shaped connecting rod 7 at the top right side of the support plate. The visualization force line emitted by the visualization force line laser indicator and the correct force line obtained by analyzing the model obtained by three-dimensional modeling of the patient's femur before surgery, that is, the actual force line of the patient's femur. Overlap or remain parallel, a hollow groove 9 for the light of the visualization force line laser indicator to pass through is set in the middle of the support plate, and the bottom right side of the support plate is connected to the vertical force line guide needle 11 through a rotating sleeve 10, the vertical force line needle guide includes a guide needle hole 12 and a connecting frame 13, the guide needle holes are fixedly opened on the left and right sides of the connecting frame, wherein the center line of the guide needle hole is perpendicular to the visualization force line, and a guide needle 14 is installed in the guide needle hole, after the guide needle is nailed in, the center line of the guide needle is perpendicular to the visualization force line, and after the vertical force line guide 15 is subsequently removed, the guide needle cooperates with the osteotomy guide plate 19, and the osteotomy guide plate is nailed into the femur along the guide needle, the osteotomy guide plate includes a plate body 16, a guide knife groove 17 and a guide needle nailing hole 18, and the line of the guide needle nailing hole is parallel to the guide knife groove, so as to ensure that the guide knife groove is perpendicular to the visualization force line.

[0025] In the implementation process of this embodiment, the inner surface of the bone guide positioning base is first fitted to the corresponding part of the femur, and then the positioning and fixation of the basic base is completed, and then the visual force line laser indicator is adjusted to the force line position direction determined before the operation or the position direction parallel to the force line. This operation is based on the preoperative scanning of the patient's femur and then three-dimensional modeling of the femur and then the accurate force line position is obtained based on physical analysis. Then, based on the corresponding data obtained, the bone guide positioning base corresponding to the lesion and the visual force line laser indicator thereon are designed, including the positional relationship between the two, so that when the visual force line laser indicator is turned on When the visualization line of force is in place, the position of the vertical force line needle guide is adjusted to a position perpendicular to the force line, so that the center line of the guide needle hole is perpendicular to the visualization line of force. After the position adjustment is completed, the guide needle is nailed into the guide needle hole to complete the guide needle positioning. Then, all the above devices except the guide needle are withdrawn, leaving only the guide needle. Then, the guide needle nail hole on the osteotomy guide plate is aligned with the guide needle and inserted along the direction to fix the osteotomy guide plate. Then, the osteotomy guide plate is cut along the guide knife groove to complete the operation.

[0026] This embodiment provides a guide device that is equipped with a precise bone-fitting positioning base, a visual force line display, and an osteotomy guide positioning pin. It uses a bone-fitting guide plate positioning base that fits the surface of the patient's femur to complete the precise positioning of the foundation, and then combines visual simulation of the patient's force line and an osteotomy guide plate that is perpendicular to the simulated force line to achieve precise vertical force line osteotomy, which greatly ensures the success rate of the operation.

[0027] In this embodiment, there are multiple groups of guide pin insertion holes on the osteotomy guide plate, and the connecting line of each group of guide pin insertion holes is parallel to the guide knife groove, which is conducive to adapting to various guide pin spacing values.

[0028] In this embodiment, the guide pin and the guide pin insertion hole are closely matched, which is conducive to directly and synchronously completing the functions of guiding positioning and fixing osteotomy.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A highly adaptable femoral osteotomy guide device, characterized in that: It includes a bone guide plate positioning base, the top of which is fixedly connected to an integrated support frame, a visual force line laser indicator is fixedly set on the top of the integrated support frame, a vertical force line needle guide is fixedly set on the bottom of the integrated support frame, a guide needle is installed inside the vertical force line needle guide, and the guide needle cooperates with the osteotomy guide.

2. A highly adaptable femoral osteotomy guide device according to claim 1, characterized in that: The bone guide plate positioning base is designed according to a three-dimensional model after radiographic imaging of the patient's femur. The bone guide plate positioning base includes an inner veneer and an outer surface, and the inner veneer is the same as the surface of the patient's femur three-dimensional model.

3. A highly adaptable femoral osteotomy guide device according to claim 2, characterized in that: The integrated support frame includes a fixing column and a supporting plate fixedly arranged on the outer surface, and a hollow groove for the light of the visual force line laser indicator to pass through is arranged in the middle of the supporting plate.

4. A highly adaptable femoral osteotomy guide device according to claim 3, characterized in that: The top right side of the support plate is connected to the visualized force line laser indicator via an L-shaped connecting rod, and the visualized force line emitted by the visualized force line laser indicator coincides with the actual force line obtained after preoperative three-dimensional modeling analysis of the patient's femur.

5. A highly adaptable femoral osteotomy guide device according to claim 4, characterized in that: The bottom right side of the support plate is connected to the vertical force line needle guide through a rotating sleeve. The vertical force line needle guide includes a needle guide hole and a connecting frame. The needle guide hole is fixedly opened on the left and right sides of the connecting frame, and the center line of the needle guide hole is perpendicular to the visualized force line.

6. A highly adaptable femoral osteotomy guide device according to claim 5, characterized in that: The osteotomy guide plate comprises a plate body, a guide knife groove and a guide pin insertion hole, and a connecting line of the guide pin insertion hole is parallel to the guide knife groove.

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