External fixing device capable of achieving distraction and pressurization
By designing an external fixation device that can achieve expansion and compression, and combining an external fixation bracket with a compression and expansion component, the problem of complex operation caused by the diversity of instruments in fracture surgery is solved, and simplified expansion, compression and fixation of the bone are achieved.
Patent Information
- Application Number
- CN202511907157.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-02-03
AI Technical Summary
Current techniques require multiple instruments in fracture surgery, making the procedure complex and making it difficult to simultaneously achieve bone expansion, compression, and fixation.
Design an external fixation device that can achieve expansion and compression, including an external fixation bracket assembly and a compression and expansion assembly. Utilize structures such as an external fixation plate, fixation screws, and struts to achieve bone expansion, compression, and fixation.
It simplifies surgical procedures, reduces the use of instruments, lowers the complexity of surgery, and achieves effective bone expansion, compression, and fixation.
Smart Images
Figure CN121445463A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical devices, in particular to an external fixation device capable of achieving distraction and compression. BACKGROUND
[0002] When performing surgical treatment on a bone fracture, a distractor is usually used to distract the bones on both sides of the fracture position, and then the bones on both sides are reduced to make the bones as much as possible to restore to the original position and length, and then an internal fixation structure is used to fix the bones. During the entire surgical process, various instruments such as a distractor and an internal fixation structure need to be involved, resulting in a complex operation process. SUMMARY
[0003] The purpose of the present application is to provide an external fixation device capable of achieving distraction and compression to solve the problems existing in the prior art, which can achieve distraction, compression and fixation of the bones.
[0004] To achieve the above-mentioned purpose, the present application provides the following solutions: The present application provides an external fixation device capable of achieving distraction and compression, comprising: an external fixation support assembly and a compression and distraction assembly, the external fixation support assembly comprising an external fixation plate, a first fixing screw and a second fixing screw, the first fixing screw and the second fixing screw being in threaded connection with the external fixation plate, the compression and distraction assembly comprising a compression and distraction fixing plate, a strut and a compression and distraction fixing screw, the strut being in threaded connection with the compression and distraction fixing plate, the compression and distraction fixing screw being used for fixing the compression and distraction fixing plate, and the strut being detachably connected with the external fixation plate.
[0005] In some specific solutions, a plurality of first fixing holes and a plurality of second fixing holes are arranged on the external fixation plate, the first fixing screw is in threaded connection with the first fixing hole, the second fixing screw is in threaded connection with the second fixing hole, and the first fixing screw and the second fixing screw are both arranged perpendicularly to the external fixation plate.
[0006] In some specific solutions, the first fixing hole and the second fixing hole are both equal-diameter threaded holes.
[0007] In some specific solutions, the first fixing hole comprises a first fixing section and a second fixing section, the first fixing section and the second fixing section are both equal-diameter threaded holes, and a first limiting step is arranged between the first fixing section and the second fixing section; the second fixing hole comprises a third fixing section and a fourth fixing section, the third fixing section and the fourth fixing section are both equal-diameter threaded holes, and a second limiting step is arranged between the third fixing section and the fourth fixing section.
[0008] In some specific embodiments, the first fixing screw is used to connect with the bone on one side of the fracture position, and the second fixing screw is used to connect with the bone on the other side of the fracture position.
[0009] In some specific embodiments, a clamping groove is arranged on the outer fixing plate, and one end of the supporting rod is provided with a limiting structure, and the shape of the clamping groove matches the shape of the supporting rod and the limiting structure.
[0010] In some specific embodiments, the clamping groove extends along the thickness direction of the outer fixing plate from the surface of the outer fixing plate.
[0011] In some specific embodiments, the clamping groove is arranged close to the end of the outer fixing plate.
[0012] In some specific embodiments, the other end of the supporting rod is provided with a handle.
[0013] In some specific embodiments, the pressurizing and distracting fixing plate is provided with a pressurizing and distracting fixing hole, the pressurizing and distracting fixing hole is a through hole or a threaded hole, and the pressurizing and distracting fixing screw can pass through the pressurizing and distracting fixing hole.
[0014] The present application has the following technical effects relative to the prior art: The outer fixing device capable of realizing distraction and pressurization of the present application can be used in cooperation with a pressurizing and distracting assembly and an outer fixing support assembly, can realize distraction, pressurization and fixation, can provide a support point for the force of the pressurizing and distracting assembly when realizing distraction and pressurization, and can be used as a fixing plate for fixing the bone after realizing distraction and pressurization, so that the outer fixing plate does not need to be removed, only the pressurizing and distracting assembly needs to be removed, the use of instruments during surgery is reduced, and the complexity of the surgery is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0016] Figure 1 The application diagram of the outer fixing device capable of realizing distraction and pressurization in some embodiments of the present application is shown. Figure 2 The outer fixing plate in some embodiments of the present application is shown. Figure 3 The cross-sectional view of the first fixing hole or the second fixing hole in some embodiments of the present application is shown. Figure 4This is a front view of the pressure-expanding component in some embodiments of the present invention; Figure 5 This is a side view of the limiting structure in some embodiments of the present invention; In the diagram: 1-Outer fixing plate, 2-First fixing screw, 3-Second fixing screw, 4-Pressure-opening fixing plate, 5-Support rod, 6-Pressure-opening fixing screw, 7-Slot, 8-Limiting structure, 9-Handle, 10-Pressure-opening fixing hole, 11-First fixing hole, 12-Second fixing hole. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] The purpose of this invention is to provide an external fixation device that can achieve both expansion and pressure on the bone, thereby solving the problems existing in the prior art. This device can both expand and pressure the bone and fix it.
[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0020] like Figures 1 to 5 As shown, this embodiment provides an external fixation device capable of both expansion and pressure application, including: an external fixation bracket assembly and a pressure-expansion assembly. The external fixation bracket assembly includes an external fixation plate 1, a first fixing screw 2, and a second fixing screw 3. Both the first fixing screw 2 and the second fixing screw 3 are threadedly connected to the external fixation plate 1. The pressure-expansion assembly includes a pressure-expansion fixing plate 4, a support rod 5, and a pressure-expansion fixing screw 6. The support rod 5 is threadedly connected to the pressure-expansion fixing plate 4, and the pressure-expansion fixing screw 6 is used to fix the pressure-expansion fixing plate 4. The support rod 5 is detachably connected to the external fixation plate 1. This embodiment's external fixation device capable of both expansion and pressure application can be used in conjunction with the external fixation bracket assembly, achieving expansion, pressure application, and fixation simultaneously. The external fixation plate 1 can work with the pressure-relaxation component during relaxation and compression to provide a support point for the force exerted by the pressure-relaxation component, and it can also serve as a fixation plate for fixing the bone. After relaxation and compression are completed, there is no need to remove the external fixation plate 1; only the pressure-relaxation component needs to be removed, which reduces the use of instruments during surgery and lowers the complexity of the surgery.
[0021] In the detailed description of some embodiments, the first fixing screw 2 is used to connect with the bone on one side of the fracture position, and the second fixing screw 3 is used to connect with the bone on the other side of the fracture position. The number of the first fixing screw 2 and the second fixing screw 3 can be selected according to actual use.
[0022] In the detailed description of some embodiments, the outer fixing plate 1 is a steel plate in the form of a cuboid, and a plurality of first fixing holes 11 and a plurality of second fixing holes 12 are arranged on the outer fixing plate 1. The first fixing screw 2 is threadedly connected with the first fixing hole 11, and the second fixing screw 3 is threadedly connected with the second fixing hole 12. The first fixing screw 2 and the second fixing screw 3 are both arranged perpendicularly to the outer fixing plate 1. A plurality of threaded holes are arranged on the outer fixing plate 1. A part of the threaded holes are the first fixing holes 11, a part of the threaded holes are the second fixing holes 12, and there can be a part of unused threaded holes. The number of the first fixing holes 11 and the second fixing holes 12 is determined according to actual use. The first fixing hole 11 and the second fixing hole 12 have the same structure, and the first fixing screw 2 and the second fixing screw 3 have the same structure.
[0023] In the detailed description of some embodiments, the first fixing hole 11 and the second fixing hole 12 are both equal-diameter threaded holes. Alternatively, the first fixing hole 11 includes a first fixing section and a second fixing section, both of which are equal-diameter threaded holes, and a first limiting step is arranged between the first fixing section and the second fixing section. The second fixing hole 12 includes a third fixing section and a fourth fixing section, both of which are equal-diameter threaded holes, and a second limiting step is arranged between the third fixing section and the fourth fixing section. The outer fixing plate 1 body of the present embodiment is in a locked state with the tail of the first fixing screw 2 through the first fixing hole 11 and in a locked state with the tail of the second fixing screw 3 through the second fixing hole 12. Due to the structural design of the first fixing hole 11 and the second fixing hole 12, angular stability can be achieved.
[0024] In the detailed description of some embodiments, the outer fixing plate 1 is provided with a clamping groove 7 extending along the thickness direction of the outer fixing plate 1 from the surface of the outer fixing plate 1. The support rod 5 is a threaded rod. The pressurizing and distraction fixing plate 4 is provided with a threaded hole. The support rod 5 is threadedly connected with the threaded hole. One end of the support rod 5 is provided with a limiting structure 8 in the form of a disc. The size of the limiting structure 8 is larger than the size of the cross section of the support rod 5. The shape of the clamping groove 7 matches the shape of the support rod 5 and the limiting structure 8. When the support rod 5 is connected with the outer fixing plate 1, the limiting structure 8 and a part of the support rod 5 are both located in the clamping groove 7. From the perspective of the top view, the shape of the clamping groove 7 is in the form of T. The shape of the clamping groove 7 can limit the limiting structure 8, so that the support rod 5 can drive the outer fixing plate 1 to move. The other end of the support rod 5 is provided with a handle 9, which facilitates the gripping of the support rod 5.
[0025] In the specific implementation of some embodiments, the clamping groove 7 is arranged near the end of the outer fixing plate 1, and one clamping groove 7 can be arranged at each end of the outer fixing plate 1.
[0026] In the specific implementation of some embodiments, the pressurizing and distracting fixing plate 4 is provided with a pressurizing and distracting fixing hole 10, the pressurizing and distracting fixing hole 10 is a through hole or a threaded hole, the pressurizing and distracting fixing screw 6 can pass through the pressurizing and distracting fixing hole 10, the pressurizing and distracting fixing screw 6 is connected with the metaphyseal bone swelling, and the anchoring effect is achieved.
[0027] In use of the outer fixing device capable of realizing pressurizing and distraction of the present embodiment, when the distraction reduction is needed, the outer fixing plate 1 is placed outside the body, the outer fixing plate 1 is connected with the bone (the distal end of the fracture) on one side of the fracture position through the first fixing screw 2, then the position of the pressurizing and distracting fixing plate 4 on the strut 5 is adjusted, the strut 5 and the outer fixing plate 1 are connected, and the pressurizing and distracting fixing screw 6 is used to fix the bone on the other side of the fracture position, the pressurizing and distracting fixing screw 6 is preferably connected with the metaphyseal bone swelling, the strut 5 is rotated to push the outer fixing plate 1, the bones on both sides of the fracture position are distracted, after the bones on both sides of the fracture position are aligned and reduced, the strut 5 is rotated again to pull the outer fixing plate 1, the gradual pressurization of the fracture position of the bone is realized, after the pressurization is completed, the second fixing screw 3 is connected with the bone (the proximal end of the fracture) on the other side of the fracture position, the reduction and fixation of the fracture are realized, and finally the pressurizing and distracting assembly is removed. The shape design of the first fixing hole 11 and the second fixing hole 12 of the present embodiment can realize the full circumferential rigid constraint, the angle loosening space is free, the load is uniformly borne by the multiple teeth of the thread, the bending moment resistance is strong, the angle freedom of the first fixing screw 2 and the second fixing screw 3 is locked by the cooperation of the first fixing hole 11 and the first fixing screw 2 and the cooperation of the second fixing hole 12 and the second fixing screw 3, the load transmission is uniform, the long-term stability is strong, and the angular stability is realized.
[0028] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.
[0029] In the description of the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0030] If the present application discloses or involves parts or structural members fixedly connected to each other, unless otherwise stated, the fixed connection can be understood as: detachable fixed connection (for example, connected by bolts or screws), or as: non-detachable fixed connection (for example, riveting, welding), of course, the fixed connection can also be replaced by an integral structure (for example, manufactured by integral forming process) (except for obvious cases that cannot be used by integral forming process).
[0031] In addition, the terms used to represent the positional relationship or shape in any technical solution disclosed by the present application include the approximate, similar or close state or shape unless otherwise stated.
[0032] Any component provided by the present application can be assembled from multiple individual components, or can be a single component manufactured by integral forming process.
[0033] It should be noted that the structure, proportion, size, etc. shown in the drawings of the present application are only used to illustrate the content disclosed in the specification, to enable those skilled in the art to understand and read, and do not define the limiting conditions for the implementation of the present application, therefore, they do not have technical significance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the present application can produce, should still fall within the scope of the technical content disclosed by the present application.
[0034] It should be noted that the same reference signs in the embodiments of the present application represent the same component or the same part.
[0035] Adaptive changes according to actual needs are within the scope of protection of the present application.
[0036] The present application uses specific examples to describe the principles and implementation modes of the present application, the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In view of the above, the content of the present application should not be understood as a limitation.
Claims
1. An external fixation device capable of achieving expansion and pressure application, characterized in that: include: An external fixation bracket assembly and a pressure-spreading assembly are provided. The external fixation bracket assembly includes an external fixation plate, a first fixing screw, and a second fixing screw. Both the first fixing screw and the second fixing screw are threadedly connected to the external fixation plate. The pressure-spreading assembly includes a pressure-spreading fixing plate, a support rod, and a pressure-spreading fixing screw. The support rod is threadedly connected to the pressure-spreading fixing plate, and the pressure-spreading fixing screw is used to fix the pressure-spreading fixing plate. The support rod is detachably connected to the external fixation plate.
2. The external fixation device capable of expanding and pressurizing according to claim 1, characterized in that: The outer fixing plate is provided with a plurality of first fixing holes and a plurality of second fixing holes. The first fixing screw is threaded to the first fixing hole, and the second fixing screw is threaded to the second fixing hole. Both the first fixing screw and the second fixing screw are arranged perpendicular to the outer fixing plate.
3. The external fixation device capable of expanding and pressurizing according to claim 2, characterized in that: Both the first fixing hole and the second fixing hole are equal-diameter threaded holes.
4. The external fixation device capable of expanding and pressurizing according to claim 2, characterized in that: The first fixing hole includes a first fixing section and a second fixing section, both of which are threaded holes of equal diameter, and a first limiting step is provided between the first fixing section and the second fixing section; the second fixing hole includes a third fixing section and a fourth fixing section, both of which are threaded holes of equal diameter, and a second limiting step is provided between the third fixing section and the fourth fixing section.
5. The external fixation device capable of expanding and pressurizing according to claim 1, characterized in that: The first fixing screw is used to connect to the bone on one side of the fracture site, and the second fixing screw is used to connect to the bone on the other side of the fracture site.
6. The external fixation device capable of expanding and pressurizing according to claim 1, characterized in that: The outer fixing plate is provided with a slot, and one end of the support rod is provided with a limiting structure. The shape of the slot matches the shape of the support rod and the limiting structure.
7. The external fixation device capable of expanding and pressurizing according to claim 6, characterized in that: The slot extends from the surface of the outer fixing plate along the thickness direction of the outer fixing plate.
8. The external fixation device capable of expanding and pressurizing according to claim 6, characterized in that: The slot is located at the end near the outer fixing plate.
9. The external fixation device capable of expanding and pressurizing according to claim 6, characterized in that: A handle is provided at the other end of the support rod.
10. The external fixation device capable of expanding and pressurizing according to claim 1, characterized in that: The pressure-opening fixing plate is provided with pressure-opening fixing holes, which are either through holes or threaded holes, and the pressure-opening fixing screws can pass through the pressure-opening fixing holes.