A tibial osteotomy guiding protection device based on 3DP technology and its assembly method

Abstract

The present invention relates to a tibial osteotomy guide protection device based on 3DP technology and an assembly method thereof, belonging to the field of medical device technology, including a personalized customized tibial fixation sleeve, a bone debris recovery baffle plate slidingly arranged on the outer side of the tibial fixation sleeve, a tibial osteotomy guide surface on the front end surface of the tibial fixation sleeve, a bone trough osteotomy guide groove on the top of the tibial fixation sleeve, and a bone trough osteotomy depth guide arranged on the front end surface of the bone trough osteotomy guide groove. The present invention simultaneously arranges a baffle structure of a protective enclosure, a recovery structure curled to form a waste bone debris recovery groove, and a guide structure accurately guiding the osteotomy path on the osteotomy guide protection device, thereby facilitating the protection of adjacent tissues from being damaged during osteotomy, facilitating clear osteotomy operation guidance and easy operation, facilitating the rapid and effective collection and cleaning of bone debris during osteotomy, and facilitating the accurate osteotomy size to ensure subsequent bone grafting and fixation, thereby greatly improving the convenience and success rate of surgery.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a tibial osteotomy guiding and protecting device based on 3DP technology and an assembly method thereof. Background Art

[0002] Tibial bone defect is the most common bone defect in life, mainly because the tibia is located under the skin. When the tibia is traumatized, it is easy to fracture. The separation of fracture fragments causes bone defects. However, the tibia is the main force-bearing bone in human movement. Therefore, when treating tibial bone defects, not only the current healing effect should be considered, but the postoperative recovery effect is more important. Therefore, the accuracy of osteotomy and bone grafting is crucial during surgical treatment of tibial bone defects.

[0003] At present, the surgical method commonly used for tibial bone defects with a length of 1-5 cm is the treatment method of using autologous bone for bone grafting and connection. The main operation is to cut a surgical incision at the site to be operated, then use tweezers to clamp and clean the broken bone residues at the bone defect, and then use a bone knife and an oscillating saw to osteotomize the end surface of the tibial bone defect to form a flat cross-section, and then open bone grooves with the same cross-sectional size at both ends of the tibia, and use steel nails to nail the autologous bone strips taken out when opening the bone grooves into the two bone grooves to connect the entire tibia, and finally suture the wound to complete the operation.

[0004] At present, in the prior art, the operation of using a bone knife and an oscillating saw to cut the end face of the tibial bone defect to form a flat cross-section is very likely to cause the bone knife and the oscillating saw to fail to stop instantly when they reach the end of the depth, and there is no protective device, resulting in cutting the flesh and blood tissue, blood vessels and nearby fibula under the bone, which causes secondary damage to the patient and increases the workload of the operation. In the process of cutting the bone groove to remove the bone strip, there is no accurate guiding cutting structure, which easily leads to different sizes of the two bone groove cross-sections, so that the subsequent bone strips cannot be smoothly assembled into the bone groove, and finally multiple adjustments are required, which greatly increases the operation time and the difficulty of the operation. When the end face of the tibial bone defect is cut to form a flat cross-section, a large amount of bone debris will be generated. Since there is no structure to receive and collect, the bone debris will splash into the flesh and blood tissue and is extremely difficult to clean. Some slightly larger bone debris will even wear the flesh and blood after suturing, causing discomfort to the patient. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a tibial osteotomy guide protection device based on 3DP technology and an assembly method thereof, using a tibial osteotomy guide protection device that simultaneously has a protection structure, an accurate osteotomy guide structure and a waste residue collection structure to solve the problems of easy damage to adjacent tissues during osteotomy, complicated osteotomy operation without accurate guidance, and inability to collect and clean bone residues.

[0006] The present invention is achieved through the following technical solutions:

[0007] A tibial osteotomy guide protection device based on 3DP technology comprises a personalized customized tibial fixation sleeve, a bone debris recovery baffle is slidably arranged on the outer side of the tibial fixation sleeve, the front end surface of the tibial fixation sleeve is a tibial osteotomy guide surface, a bone trough osteotomy guide groove is provided on the top of the tibial fixation sleeve, and a bone trough osteotomy guide groove is snap-fitted and assembled on the front end surface of the bone trough osteotomy guide groove.

[0008] Furthermore, baffle slide grooves are fixedly provided on both left and right sides of the outer side of the tibial fixation sleeve, and the bone debris recovery baffle is slidably connected to the baffle slide groove through a roller slidably set in the baffle slide groove, and pulley buckles are provided on the outer sides of the baffle slide grooves.

[0009] Furthermore, the bottom of the bone debris recovery baffle is arranged as a curled arc groove, and the bone debris recovery baffle is made of spring steel.

[0010] Furthermore, fixing pin guide grooves are provided on both sides of the bone groove osteotomy guide groove.

[0011] Furthermore, depth guide groove card interfaces are provided on both sides of the front end surface of the bone groove osteotomy guide groove. The bone groove osteotomy depth guide is a U-shaped block. A card joint is fixedly provided on the rear side of the bone groove osteotomy depth guide, and the card joint cooperates with the depth guide groove card interface.

[0012] Furthermore, the bone groove osteotomy depth guide is the same as the inner width dimension of the bone groove osteotomy guide groove.

[0013] Furthermore, the tibial fixation sleeve is made by 3D printing.

[0014] Furthermore, the outer edges of the tibial fixing sleeve and the baffle slide groove are both configured as rounded corners.

[0015] The beneficial effects of the present invention are:

[0016] The present invention simultaneously arranges a baffle structure of a protective enclosure, a recovery structure that curls to form a waste bone debris recovery groove, and a guide structure that accurately guides the osteotomy path on the osteotomy guide protection device, thereby facilitating the protection of adjacent tissues from being damaged during osteotomy, facilitating clear and easy operation of the osteotomy operation, facilitating rapid and effective collection and cleaning of bone debris during osteotomy, and facilitating accurate osteotomy dimensions to ensure subsequent bone grafting and fixation, thereby greatly improving the convenience and success rate of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall front view of the assembly;

[0018] Figure 2 It is the overall side view of the assembly;

[0019] Figure 3 This is the bottom view of the assembly as a whole;

[0020] Figure 4 It is a three-dimensional structural diagram of the overall assembly;

[0021] Figure 5 It is a cross-sectional view.

[0022] Description of reference numerals:

[0023] 1. Tibial fixation sleeve; 2. Baffle slide; 3. Bone debris recovery baffle; 4. Roller; 5. Pulley buckle; 6. Curled arc groove; 7. Tibial osteotomy guide surface; 8. Bone groove osteotomy guide groove; 9. Depth guide groove card interface; 10. Bone groove osteotomy depth guide; 11. Card joint; 12. Fixation pin guide groove. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0029] like Figure 1-5 As shown, an embodiment of the present invention is: a tibial osteotomy guiding and protecting device based on 3DP technology, comprising a personalized customized tibial fixing sleeve 1, baffle slide grooves 2 are fixedly arranged on the left and right sides of the outer side of the tibial fixing sleeve, bone debris recovery baffles 3 are slidably arranged on the outer side of the baffle slide groove, the bone debris recovery baffle is slidably connected to the baffle slide groove by a roller 4 slidably arranged in the baffle slide groove, three pulley buckles 5 are arranged on the outer side of the baffle slide groove on each side, which are used to lock and fix the bone debris recovery baffle in a specific position, the bottom of the bone debris recovery baffle is set as a curling arc groove 6, the bone debris recovery baffle is made of spring steel, and the front end surface of the tibial fixing sleeve is set as a tibial osteotomy guiding Surface 7, a bone groove osteotomy guide groove 8 is provided on the top of the tibial fixation sleeve, and depth guide groove clamping interfaces 9 are provided on both sides of the left and right sides of the front end surface of the bone groove osteotomy guide groove, which are engaged with the clamping joint 11 fixedly arranged on the rear side of the bone groove osteotomy depth guide 10 through the depth guide groove clamping interface. Since the clamping joint cooperates with the depth guide groove clamping interface, they can be firmly engaged. After engagement, the bone groove osteotomy depth guide is located at the front end surface of the bone groove osteotomy guide groove. The bone groove osteotomy depth guide is a U-shaped block, and the bone groove osteotomy depth guide has the same inner width as the bone groove osteotomy guide groove, which is convenient for avoiding interference when the bone groove is formed by subsequent osteotomy. Fixed pin guide grooves 12 are provided on both sides of the bone groove osteotomy guide groove.

[0030] When implementing this embodiment, firstly, the tibial fixing sleeves are respectively sleeved on the two tibias broken by the tibial defect, and then the fixing pins are nailed into the fixing pin guide grooves to fix the tibial fixing sleeves, and then the pulley buckle fixed at the upper end is loosened, and the two bone debris recovery baffles are slid down along the baffle slide grooves, and the sliding is stopped when the left and right bone debris recovery baffles are in contact with each other, and the pulley buckle is used to clamp it to keep it in this state, and then the osteotomy equipment is used to perform osteotomy on the tibia along the tibial osteotomy guide surface, and then the large pieces of osteotomy debris are clamped out first. After completing the osteotomy of the tibial end surface, the bone groove osteotomy of the upper end of the tibia is started, and the bone groove osteotomy depth guide is first assembled to the bone groove osteotomy guide by clamping and fixing it through the clamping joint and the depth guide groove clamping interface. Toward the front end of the groove, and then use the osteotomy tool to perform osteotomy along the path guided by the bone groove osteotomy guide groove and the bone groove osteotomy depth guide, and then sweep the debris in the bone groove obtained by osteotomy into the recovery space composed of two bone debris recovery baffles at the bottom, then remove the bone groove osteotomy depth guide, and then assemble the bone strips produced when the bone groove is obtained by osteotomy into the bone grooves on the two sections of the tibia, connect the two sections of the tibia, and then drive in the fixing nails to fix them. After the fixation is completed, release the pulley buckle, and then slide the two bone debris recovery baffles along the baffle slide groove to the initial position. Since the ends of the two bone debris recovery baffles are curled arc grooves, the debris and bone debris will not fall due to movement. Finally, remove the fixing pin, dismantle the entire device, and complete the operation.

[0031] This embodiment simultaneously arranges a baffle structure of a protective enclosure, a recovery structure that curls to form a waste bone debris recovery groove, and a guide structure that accurately guides the osteotomy path on the osteotomy guide protection device, thereby facilitating the protection of adjacent tissues from damage during osteotomy, facilitating clear and easy operation of the osteotomy operation, facilitating rapid and effective collection and cleaning of bone debris during osteotomy, and ensuring that the osteotomy size is accurate to ensure subsequent bone grafting and fixation, thereby greatly improving the convenience and success rate of the operation.

[0032] In this embodiment, the tibial fixation sleeve is customized according to the patient's tibial model so that the inner side of the tibial fixation sleeve is completely identical to the tibial surface, and then manufactured by 3D printing, which is conducive to the stable connection between the tibial fixation sleeve and the tibia.

[0033] In this embodiment, the outer edges of the tibial fixing sleeve and the baffle slide groove are both set to be rounded, which is beneficial to prevent the tibial fixing sleeve from damaging other tissues in the body when in use.

[0034] In this embodiment, the bone debris recovery baffle can slide to two specific positions under the action of three buckles on each side of the slide groove. One position is the position covering the top when just assembled, and the other is the position where the two bone debris recovery baffles are in close contact at the bottom after sliding down, forming a curled groove body that can not only recover waste debris and bone fragments, but also act as a protective plate when the osteotomy tool is moved downward to protect other tissues from damage.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A tibial osteotomy guiding and protecting device based on 3DP technology, characterized in that: It comprises a personalized customized tibial fixation sleeve, the outer side of which is slidably provided with a bone debris recovery baffle, the front end surface of the tibial fixation sleeve is a tibial osteotomy guide surface, the top of the tibial fixation sleeve is provided with a bone groove osteotomy guide groove, and the front end surface of the bone groove osteotomy guide groove is snap-fitted with a bone groove osteotomy depth guide.

2. The tibial osteotomy guiding and protecting device based on 3DP technology according to claim 1, characterized in that: Baffle slide grooves are fixedly arranged on both left and right sides of the outer side of the tibial fixing sleeve, and the bone debris recovery baffle is slidably connected to the baffle slide groove through a roller slidably arranged in the baffle slide groove, and pulley buckles are arranged on the outer sides of the baffle slide grooves.

3. The tibial osteotomy guiding and protecting device based on 3DP technology according to claim 2, characterized in that: The bottom of the bone debris recovery baffle is arranged as a curled arc groove, and the bone debris recovery baffle is made of spring steel.

4. The tibial osteotomy guiding and protecting device based on 3DP technology according to claim 1, characterized in that: Fixing pin guide grooves are provided on both sides of the bone groove osteotomy guide groove.

5. The tibial osteotomy guiding and protecting device based on 3DP technology according to claim 1, characterized in that: Depth guide groove card interfaces are provided on both sides of the front end surface of the bone groove osteotomy guide groove. The bone groove osteotomy depth guide is a U-shaped block. A card joint is fixedly provided on the rear side of the bone groove osteotomy depth guide, and the card joint cooperates with the depth guide groove card interface.

6. The tibial osteotomy guiding and protecting device based on 3DP technology according to claim 1, characterized in that: The bone groove osteotomy depth guide is the same as the inner width dimension of the bone groove osteotomy guide groove.

7. The tibial osteotomy guiding and protecting device based on 3DP technology according to claim 1, characterized in that :The tibial fixation sleeve is made by 3D printing.

8. The tibial osteotomy guiding and protecting device based on 3DP technology according to claim 2, characterized in that The outer edges of the tibial fixing sleeve and the baffle slide groove are both set to be rounded.

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