Bone defect repair stent

Abstract

The utility model relates to a bone defect repairing support which comprises a defect filling block and a positioning support, and the positioning support comprises an arc-shaped attaching plate and a side face attaching frame. The arc-shaped attaching plate comprises a fixing plate, adjusting plates are inserted into the left side and the right side of the fixing plate, the tops of the two adjusting plates are each provided with a set of first positioning holes, the two ends of the top of the fixing plate are each provided with a second positioning hole, and the interiors of the two second positioning holes are each in threaded connection with a positioning nail. According to the bone defect repairing support, the arc-shaped attaching plate can be adjusted to the proper length according to the area of the defect filling block, and the distance between the two side face attaching plates can be adjusted according to the thickness of the defect filling block, so that the front side and the rear side of the defect filling block can be fixed through the two side face attaching plates; the length of the arc-shaped attaching plate and the distance between the side attaching frames can be adjusted in a personalized mode according to the requirement for the repairing area of a patient, and the applicability during use and the use comfort of the patient are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a bone defect repairing bracket. Background Art

[0002] Bone defect repair scaffolds are medical devices used to treat bone defects. They are usually made of biocompatible materials such as metal, ceramic or polymer. These scaffolds can provide mechanical support, help new bone growth, and promote bone healing.

[0003] After searching, for example, the invention patent with Chinese patent publication number CN118078501A discloses a degradable scaffold for repairing oral and maxillofacial bone defects, comprising: oral and maxillofacial bones, the oral and maxillofacial bones include a defect part, a vertical positioning shallow hole is opened at the bottom of the defect part, and a horizontal positioning shallow hole is opened on the side of the defect part; a filling structure, the filling structure is located inside the defect part, and the filling structure and the defect part are used in conjunction with each other; a stabilizing structure, the stabilizing structure is fixedly installed on the oral and maxillofacial bones, and the stabilizing structure limits the filling structure; the invention can fill the defect part by setting the filling structure, and the filling structure is not easy to fall off after filling, thereby greatly improving the quality of the filling.

[0004] Existing stents for repairing oral and maxillofacial bone defects usually adopt a fixed-size design. The design of the stable structure cannot be personalized according to the specific conditions of different patients. The corresponding stable structure needs to be selected according to the size of the filling structure, which limits its scope of application. Therefore, a bone defect repair stent is proposed. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the present invention provides a bone defect repair bracket with advantages such as adjustability, which solves the problem that the existing brackets used for oral and maxillofacial bone defect repair usually adopt a fixed size design and the stable structure design cannot be personalized according to the specific conditions of different patients.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bone defect repair bracket, comprising a defect filling block and a positioning bracket, wherein the positioning bracket comprises an arc-shaped laminating plate and a side laminating frame;

[0007] The arc-shaped laminating plate includes a fixed plate, and adjustment plates are inserted on the left and right sides of the fixed plate. A group of positioning holes 1 are opened on the top of the two adjustment plates, and positioning holes 2 are opened at both ends of the top of the fixed plate. Positioning pins are threadedly connected to the inside of the two positioning holes 2.

[0008] The side laminating frame includes a mounting block, an accommodating cavity is opened inside the mounting block, a bidirectional screw is rotatably installed on the right inner wall of the accommodating cavity, a sliding rod is fixedly installed between the left and right inner walls of the accommodating cavity, two movable blocks are movably installed between the outer surfaces of the bidirectional screw and the sliding rod, and the bottoms of the two movable blocks are fixedly installed with side laminating plates.

[0009] Furthermore, one end of each of the two positioning pins passes through the second positioning hole and one of the first positioning holes in sequence and extends to the bottom of the fixing plate.

[0010] Furthermore, a plate fitting groove adapted to the fixing plate is provided on the top of the mounting block.

[0011] Furthermore, circular holes are opened on the left and right sides of the mounting block, and one end of the bidirectional screw passes through the circular hole and extends to the left side of the mounting block and is fixedly mounted with a knob.

[0012] Furthermore, the two moving blocks are both threadedly connected to the bidirectional screw and are both slidably connected to the sliding rod.

[0013] Furthermore, an opening is provided at the bottom of the mounting block, and the two side fitting plates both pass through the opening and extend to the front and rear sides of the defect filling block.

[0014] Furthermore, a block fitting groove adapted to the mounting block is provided on the top of the defect filling block, the fixing plate is fixedly installed inside the plate fitting groove, and the bottom of the mounting block is tightly fitted with the block fitting groove.

[0015] Furthermore, screw holes are provided inside the two side laminating plates, and screws are threadedly connected between the two screw holes.

[0016] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0017] The bone defect repair bracket is provided with a positioning bracket, and the arc-shaped bonding plate can be adjusted to a suitable length according to the area of the defect filling block, so that the arc-shaped bonding plate is fixed on the top of the oral and maxillofacial bone. In addition, the distance between the two side bonding plates can be adjusted according to the thickness of the defect filling block, so that the two side bonding plates can fix the front and back sides of the defect filling block. The length of the arc-shaped bonding plate and the distance between the side bonding frames can be individually adjusted according to the patient's repair area requirements, which significantly improves the applicability during use and the patient's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of another three-dimensional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the side laminating frame of the utility model;

[0021] Figure 4 This is a top sectional view of the utility model mounting block;

[0022] Figure 5 This is a bottom view of the mounting block of the utility model.

[0023] In the figure: 1. defect filling block; 2. positioning bracket; 3. arc-shaped fitting plate; 301. fixing plate; 302. adjusting plate; 303. positioning hole 1; 304. positioning hole 2; 305. positioning pin; 4. side fitting frame; 401. mounting block; 402. accommodating cavity; 403. bidirectional screw; 404. sliding rod; 405. moving block; 406. side fitting plate; 407. screw hole; 408. screw; 409. opening; 11. block fitting groove; 41. plate fitting groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5 A bone defect repair bracket in this embodiment includes a defect filling block 1 and a positioning bracket 2, and the positioning bracket 2 includes an arc-shaped bonding plate 3 and a side bonding frame 4.

[0026] The arc-shaped bonding plate 3 includes a fixed plate 301, and adjustment plates 302 are inserted on the left and right sides of the fixed plate 301. A group of positioning holes 303 are opened on the top of the two adjustment plates 302, and positioning holes 304 are opened at both ends of the top of the fixed plate 301. The interior of the two positioning holes 304 is threaded with positioning pins 305.

[0027] When in use, the doctor first takes an image of the patient's defect site through CT, and then uses relevant three-dimensional modeling software to design the size of the high-strength defect filling block 1 according to the image of the defect site. After it is made, the positioning bracket 2 is adjusted according to the size of the defect filling block 1. When adjusting the length of the arc-shaped fitting plate 3, first move the two adjustment plates 302 outward or inward. After adjusting the two adjustment plates 302 to the appropriate position, since the two adjustment plates 302 are provided with multiple positioning holes 303, the two positioning pins 305 are screwed into the positioning holes 304 and the corresponding positioning holes 303 to fix the arc-shaped fitting plate 3 on the top of the oral and maxillofacial bones.

[0028] The side laminating frame 4 includes a mounting block 401, an accommodating cavity 402 is opened inside the mounting block 401, a bidirectional screw 403 is rotatably installed on the right inner wall of the accommodating cavity 402, a slide bar 404 is fixedly installed between the left and right inner walls of the accommodating cavity 402, two movable blocks 405 are movably installed between the outer surfaces of the bidirectional screw 403 and the slide bar 404, and a side laminating plate 406 is fixedly installed on the bottom of the two movable blocks 405.

[0029] After the arc-shaped bonding plate 3 is fixed on the top of the oral and maxillofacial bone, the two side bonding plates 406 are located on the front and rear sides of the defect filling block 1. Then, according to the thickness of the defect filling block 1, the distance between the two side bonding plates 406 is adjusted. First, the bidirectional screw 403 is rotated by the knob. Under the action of the sliding rod 404, the bidirectional screw 403 drives the two moving blocks 405 to move relative to each other when it rotates. The two moving blocks 405 drive the two side bonding plates 406 to move relative to each other at the opening 409 until the two side bonding plates 406 are tightly fitted on the front and rear sides of the defect filling block 1. The screws 408 are screwed into the two screw holes 407 to fix the two side bonding plates 406 on the oral and maxillofacial bone, so that the defect filling block 1 is fixed at the defect of the oral and maxillofacial bone.

[0030] The top of the mounting block 401 is provided with a plate body fitting groove 41 that is compatible with the fixed plate 301, and the top of the defect filling block 1 is provided with a block body fitting groove 11 that is compatible with the mounting block 401. The fixing plate 301 is fixedly installed inside the plate body fitting groove 41, and the bottom of the mounting block 401 is tightly fitted with the block body fitting groove 11. By setting the plate body fitting groove 41 and the block body fitting groove 11, the bottom of the fixing plate 301 can be tightly fitted with the top of the mounting block 401, thereby improving the firmness of the connection between the two. The function of the block body fitting groove 11 is to enable the top of the defect filling block 1 to be tightly fitted with the bottom of the mounting block 401, which is convenient for subsequent fixation.

[0031] To sum up, the bone defect repair bracket, by setting a positioning bracket 2, can adjust the arc-shaped bonding plate 3 to an appropriate length according to the area of the defect filling block 1, so that the arc-shaped bonding plate 3 is fixed on the top of the oral and maxillofacial bone, and the distance between the two side bonding plates 406 can be adjusted according to the thickness of the defect filling block 1, so that the two side bonding plates 406 can fix the front and back sides of the defect filling block 1, and can personalize the length of the arc-shaped bonding plate 3 and the distance of the side bonding frame 4 according to the patient's repair area requirements, which significantly improves the applicability during use and the patient's comfort.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bone defect repair scaffold, comprising a defect filling block (1) and a positioning scaffold (2), characterized in that: The positioning bracket (2) comprises an arc-shaped laminating plate (3) and a side laminating frame (4); The arc-shaped laminating plate (3) includes a fixed plate (301), and the left and right sides of the fixed plate (301) are both plugged with adjustment plates (302), and the tops of the two adjustment plates (302) are each provided with a group of positioning holes (303), and the top ends of the fixed plate (301) are each provided with positioning holes (304), and the interiors of the two positioning holes (304) are both threadedly connected with positioning pins (305); The side laminating frame (4) comprises a mounting block (401), an accommodating chamber (402) is provided inside the mounting block (401), a bidirectional screw (403) is rotatably mounted on the right inner wall of the accommodating chamber (402), a slide bar (404) is fixedly mounted between the left and right inner walls of the accommodating chamber (402), two movable blocks (405) are movably mounted between the outer surfaces of the bidirectional screw (403) and the slide bar (404), and a side laminating plate (406) is fixedly mounted on the bottom of each of the two movable blocks (405).

2. The bone defect repair scaffold according to claim 1, characterized in that: One end of each of the two positioning pins (305) passes through the second positioning hole (304) and one of the first positioning holes (303) in sequence and extends to the bottom of the fixing plate (301).

3. The bone defect repair scaffold according to claim 1, characterized in that: The top of the installation block (401) is provided with a plate body fitting groove (41) adapted to the fixing plate (301).

4. The bone defect repair scaffold according to claim 1, characterized in that: Circular holes are provided on the left and right sides of the mounting block (401), and one end of the bidirectional screw (403) passes through the circular hole and extends to the left side of the mounting block (401) and is fixedly mounted with a knob.

5. The bone defect repair scaffold according to claim 1, characterized in that: The two moving blocks (405) are both threadedly connected to the bidirectional screw (403) and are both slidably connected to the sliding rod (404).

6. The bone defect repair scaffold according to claim 1, characterized in that: The bottom of the installation block (401) is provided with an opening (409), and the two side fitting plates (406) both pass through the opening (409) and extend to the front and rear sides of the defect filling block (1).

7. The bone defect repair scaffold according to claim 3, characterized in that: The top of the defect filling block (1) is provided with a block fitting groove (11) adapted to the mounting block (401), the fixing plate (301) is fixedly mounted inside the plate fitting groove (41), and the bottom of the mounting block (401) is tightly fitted with the block fitting groove (11).

8. The bone defect repair scaffold according to claim 1, characterized in that: The insides of the two side laminating plates (406) are both provided with screw holes (407), and a screw (408) is threadedly connected between the two screw holes (407).

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