Bone fracture plate capable of self-adaptively extending after implantation
The adaptive elongation bone plate design solves the problem of unequal limb length between the affected and healthy limbs in underage patients caused by traditional bone plates. It provides stable fixation and adapts to bone growth, reducing the feeling of foreign body irritation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional fixed-length bone plates can easily lead to limb length discrepancies between the affected and healthy limbs in underage patients after implantation.
A bone plate that can adaptively elongate after implantation was designed. It uses a tenon-and-mortise connection between the slot and the plate, combined with a biodegradable magnesium alloy retaining post, to provide initial fixation. Later, as the retaining post degrades, the bone plate is allowed to adaptively elongate.
It achieves stable fixation in the early stage of bone healing, and adaptively elongates as bone grows in the later stage, reducing the feeling of foreign body irritation, and is suitable for the bone healing needs of underage patients.
Smart Images
Figure CN224039290U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical equipment technical field, concretely relates to a bone plate that can be self -adaptation elongation after implantation. BACKGROUND
[0002] The mainstream bone plate at present is mostly the form of fixed length long thin plate, is equipped with screw hole, can be fixed on the bone surface through the screw hole after implantation, plays the fixed role, maintains the reset of broken bone / fracture, thereby promotes the bone healing.
[0003] However, although the traditional bone plate can provide stable fixed role in the initial implantation period, but the bone of the minor is in the growth state, and the healing period of the broken bone is long, so that the traditional bone plate left in the body can limit the growth of the bone, thereby causing the problem of unequal length between the affected limb and the healthy limb, therefore the traditional fixed length bone plate cannot be applied to the minor patient. CONTENT OF THE UTILITY MODEL
[0004] The utility model discloses the purpose at: in view of the problem of traditional bone plate, and design a kind of bone plate that can be self -adaptation elongation after implantation, solve the problem that traditional fixed length bone plate is easily led to the unequal length between the affected limb and the healthy limb of minor patient after implantation.
[0005] To achieve the above-mentioned purpose, the utility model is realized by the following technical schemes:
[0006] The utility model discloses a kind of bone plate that can be self -adaptation elongation after implantation, the bone plate includes:
[0007] First bone plate body, it has opposite first fixed end and first connecting end, the first bone plate body is provided with a plurality of first fixed holes, for being fixed on broken bone after implantation with the first bone plate body, the first bone plate body is also provided with the insertion slot passing through with the first connecting end, the bottom of the insertion slot is provided with first limiting hole;
[0008] Second bone plate body, it has opposite second fixed end and second connecting end, the second bone plate body is provided with a plurality of second fixed holes, for being fixed on broken bone after implantation with the second bone plate body, the second connecting end is provided with the insertion plate of the insertion slot insertion, the insertion plate is provided with second limiting hole;
[0009] And limiting column, after the insertion plate is inserted in the insertion slot, the limiting column is arranged in the first limiting hole and second limiting hole, the first bone plate body and second bone plate body are positioned by limiting column, avoid the first bone plate body and second bone plate body from separating from insertion direction after insertion.
[0010] Further, the implantable self-adaptable lengthening bone plate, the first fixed end is arranged as a circular arc structure.
[0011] Further, the implantable self-adaptable lengthening bone plate, the second fixed end is arranged as a circular arc structure.
[0012] Further, the implantable self-adaptable lengthening bone plate, a plurality of first fixed holes are arranged on the first bone plate body along the length direction of the first bone plate body.
[0013] Further, the implantable self-adaptable lengthening bone plate, a plurality of second fixed holes are arranged on the second bone plate body along the length direction of the second bone plate body.
[0014] Further, the implantable self-adaptable lengthening bone plate, the first limiting hole penetrates the bottom of the slot.
[0015] Further, the implantable self-adaptable lengthening bone plate, the insert plate has opposite first and second surfaces, the second surface is attached to the bottom of the slot after the insert plate is inserted into the slot, the second limiting hole is arranged on the second surface, and the second limiting hole is not penetrated through the first surface.
[0016] Further, the implantable self-adaptable lengthening bone plate, the cross sections of the slot and the insert plate are arranged as trapezoidal structures, and the slot and the insert plate form a mortise and tenon type connection.
[0017] Further, the implantable self-adaptable lengthening bone plate, the limiting column is made of biodegradable magnesium alloy.
[0018] The implantable self-adaptable lengthening bone plate has the following beneficial effects:
[0019] (1) The implantable self-adaptable lengthening bone plate is connected in a mortise and tenon type through the slot and the insert plate, so that the bone plate forms a self-adaptable lengthening structure, thereby providing stable fixation in the early stage after implantation, and the first bone plate body and the second bone plate body are released from the limiting of the limiting column in the later stage after the biodegradation of the limiting column in the body, so that the bone plate can be self-adaptively lengthened in the length direction, thereby meeting the use of minors.
[0020] (2) The design of the trapezoidal slot and the insert plate in the implantable self-adaptable lengthening bone plate can maintain the whole bone plate in a relatively thin form, thereby reducing the foreign body stimulation after implantation. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings described in the following are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.
[0022] Figure 1 A schematic diagram of the shortest form of the bone plate which can be self-adaptively elongated after implantation is designed for the embodiment 1 of the present application.
[0023] Figure 2 、 Figure 3 An exploded schematic diagram of the bone plate which can be self-adaptively elongated after implantation is designed for the embodiment 1 of the present application.
[0024] Figure 4 A sectional view of the insertion plate and the second bone plate body in the embodiment 1.
[0025] Markings in the figure: 1-first bone plate body, 2-second bone plate body, 3-limiting column, 11-first fixed end, 12-first connecting end, 13-first fixed hole, 14-insertion slot, 15-first limiting hole, 21-second fixed end, 22-second connecting end, 23-second fixed hole, 24-insertion plate, 25-second limiting hole, 241-first surface, 242-second surface. DETAILED DESCRIPTION
[0026] The technical scheme in the embodiments of the present application will be described clearly and completely in the following by combining with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein.
[0028] Example 1
[0029] like Figures 1-4 As shown, this embodiment 1 designs a bone plate that can adaptively elongate after implantation. The bone plate includes the following components:
[0030] The first bone plate body 1 has a first fixed end 11 and a first connecting end 12. The first fixed end 11 is configured as an arc structure. The first bone plate body 1 has four first fixing holes 13 that penetrate the first bone plate body 1 at equal intervals along its length starting from near the first fixed end 11. The first bone plate body 1 is also provided with a slot 14 that communicates with the first connecting end 12 (i.e., the first connecting end 12 serves as the insertion port of the slot 14). The slot 14 is provided with a first limiting hole 15 that penetrates the bottom of the slot. The slot 14 is configured with a trapezoidal cross-section.
[0031] The second bone plate body 2 has opposite second fixed ends 21 and second connecting ends 22, the second fixed ends 21 are arranged in a circular arc structure, four second fixed holes 23 are arranged on the second bone plate body 2 at equal intervals along the length direction of the second bone plate body 2 from the position close to the second fixed ends 21, the second connecting ends 22 are provided with plug plates 24 which are inserted into the insertion grooves 14, the plug plates 24 have opposite first surfaces 241 and second surfaces 242, the second surfaces 242 are in contact with the bottom of the insertion grooves 14 after the plug plates 24 are inserted into the insertion grooves 14, the second surfaces 242 are further provided with second limiting holes 25 which are not through the first surfaces 241 (that is, the second limiting holes 25 are not arranged through the plug plates 24), the cross section of the plug plates 24 is arranged in a trapezoidal structure, the insertion grooves 14 and the plug plates 24 form a mortise and tenon type connection mode and can maintain smooth sliding between the plug plates 24 and the insertion grooves 14;
[0032] The limiting column 3 is made of biodegradable magnesium alloy, after the plug plates 24 are inserted into the insertion grooves 14, the limiting column 3 is arranged in the first limiting holes 15 and the second limiting holes 25 by an internal expansion method, and can be used for limiting the first bone plate body 1 and the second bone plate body 2.
[0033] The operation of the bone plate in the above embodiment 1 is the same as that of a traditional bone plate, first, the first bone plate body 1 and the second bone plate body 2 are inserted into the insertion grooves 14 and the plug plates 24 to form the shortest shape (as shown in the Figure 1 The magnesium alloy limiting column 3 is not degraded and absorbed by the human body at the initial stage of implantation, at this time, the bone plate exists in a whole non-extendable solid mode to maintain the stable fixing effect of the broken bone / bone fracture at the initial stage of healing, with the in-vivo biodegradation of the magnesium alloy limiting column 3, the limiting between the first bone plate body 1 and the second bone plate body 2 is released, and then the state of being extendable is switched, with the bone growth, the first bone plate body 1 and the second bone plate body 2 can respectively move to the two ends adaptively, and the rigidity of the bone plate axis is maintained through the mortise and tenon type connection of the insertion grooves 14 and the plug plates 24.
[0034] The above is the preferred embodiment of the utility model and is used for explaining the utility model, and is not used for limiting the utility model. All the obvious changes or changes derived from the technical scheme of the utility model are still within the protection scope of the utility model.
Claims
1. An osteosynthesis plate which is self-adaptable to elongation after implantation, characterized in that, The bone plate comprises: a first bone plate body (1) having opposite first fixing ends (11) and first connecting ends (12), a plurality of first fixing holes (13) being arranged on the first bone plate body (1), and a first limiting hole (15) being arranged at the bottom of a slot (14) penetrating through the first connecting end (12); a second bone plate body (2) having opposite second fixing ends (21) and second connecting ends (22), a plurality of second fixing holes (23) being arranged on the second bone plate body (2), and a second limiting hole (25) being arranged on a plug plate (24) inserted into the slot (14) of the second connecting end (22); and a limiting column (3) arranged in the first limiting hole (15) and the second limiting hole (25) for limiting the first bone plate body (1) and the second bone plate body (2); the limiting column (3) is made of biodegradable magnesium alloy.
2. The bone plate according to claim 1, wherein The first fixing end (11) is arranged in a circular arc structure.
3. The self-adaptable elongating bone plate according to claim 1, wherein, The second fixing end (21) is arranged in a circular arc structure.
4. The self-adaptable elongating bone plate according to claim 1, wherein, The plurality of first fixing holes (13) are arranged on the first bone plate body (1) at equal intervals along the length direction of the first bone plate body (1).
5. The self-adaptable elongating bone plate according to claim 1, wherein, The plurality of second fixing holes (23) are arranged on the second bone plate body (2) at equal intervals along the length direction of the second bone plate body (2).
6. The self-adaptable elongating bone plate according to claim 1, wherein, The first limiting hole (15) penetrates through the bottom of the slot (14).
7. The self-adaptable elongating bone plate according to claim 1, wherein, The plug plate (24) has opposite first surface (241) and second surface (242); after the plug plate (24) is inserted into the slot (14), the second surface (242) is attached to the bottom of the slot (14). The second limiting hole (25) is arranged on the second surface (242) and does not penetrate through the first surface (241).
8. The self-adaptable elongating bone plate according to claim 1, wherein, The cross sections of the slot (14) and the plug plate (24) are arranged in trapezoidal structures, and the slot (14) and the plug plate (24) form a mortise and tenon type connection mode.