A skull repair connection assembly and installation method thereof

Abstract

The present application discloses a skull repair connection assembly and an installation method thereof, comprising a lower base and an upper cover; the upper cover comprises a cover plate and a one-way bolt; the one-way bolt is fixedly arranged at the lower middle end of the cover plate; a plurality of inclined protrusions are arranged on both sides of the one-way bolt; the lower base comprises a pair of symmetrically arranged card plates; the pair of card plates are fixedly connected by a bent elastic sheet; a cavity for accommodating the one-way bolt is formed between the opposite surfaces of the pair of card plates and the elastic sheet; a plurality of grooves for cooperating with the protrusions are arranged on the side of the card plate close to the cavity; a buckle for engaging the skull or the repair piece is arranged on the side of the lower end of the card plate away from the cavity; a pressing piece for lifting the card plate is arranged on the side of the upper end of the card plate away from the cavity; the protrusions cooperate with the grooves to form a locking structure, so that the lower base and the upper cover are connected and fixed. The installation can be completed in only two steps, and the operation is simple and convenient, and no auxiliary equipment is required.

Description

Technical Field

[0001] The present application relates to a skull repair connection assembly and an installation method thereof, and belongs to the technical field of medical devices. Background Art

[0002] In many cases of skull trauma fractures (such as car accidents, blows, etc.), malignant intracranial hypertension (such as cerebral hemorrhage with severe cerebral edema, brain trauma, brain tumors, etc.) or skull tumors, surgery often requires bone flap removal and decompression, milling off large pieces of skull, which interrupts or damages the continuity of the skull and leads to skull defects. PEEK (polyetheretherketone) is a skull repair material that has only been used in recent years. It can be individually 3D printed according to the patient's skull defect, accurately replicating the patient's original discarded bone flap model, perfectly fitting the defect site, and basically similar in appearance to the normal state before surgery. It has good biocompatibility and will not cause discomfort in the surgical field area after surgery. The strength is significantly better than titanium mesh (relatively not afraid of collision and impact), and it does not affect radiological examinations. When fixing the PEEK patch, current products usually need to introduce screw connecting pieces, which also have the problem of metal nails and uneven structure. The use process of the connecting piece structure that does not use metal nails in the prior art is still relatively cumbersome. Summary of the invention

[0003] In order to solve the problem of cumbersome operation of the PEEK patch connection structure in the prior art, the present application provides a skull repair connection component and an installation method thereof, which adopts a self-locking structural design and can be easily installed manually without the help of auxiliary equipment during use. After installation, the self-locking structure can firmly fix the skull and the patch.

[0004] This application adopts the following technical solutions:

[0005] A skull repair connection assembly comprises a lower base body and an upper cover body;

[0006] The upper cover body includes a cover plate 2 and a one-way bolt 1;

[0007] The one-way bolt 1 is fixedly arranged at the lower end of the middle part of the cover plate 2; a plurality of inclined protrusions 3 are arranged on both sides of the one-way bolt 1;

[0008] The lower base includes a pair of symmetrically arranged clamping plates 4;

[0009] The pair of clamping plates 4 are fixedly connected by a bent elastic sheet 8; a cavity for accommodating the one-way bolt 1 is formed between the opposite surfaces of the pair of clamping plates 4 and the elastic sheet 8; a plurality of grooves 6 for cooperating with the protrusions 3 are provided on one side of the clamping plate close to the cavity;

[0010] A buckle 7 for engaging the skull 9 or the patch 10 is provided on the side of the lower end of the clamping plate 4 away from the cavity;

[0011] A pressing sheet 5 for lifting the cardboard is provided on one side of the upper part of the cardboard 4 away from the cavity;

[0012] The protrusion 3 cooperates with the groove 6 to form a locking structure, so that the lower base and the upper cover are connected and fixed.

[0013] Optionally, the elastic sheet 8 is bent toward one side of the cavity.

[0014] Optionally, the pressing sheet 5 is a V-shaped structure consisting of a long sheet and a short sheet;

[0015] The side of the V-shape away from the cavity is a long piece of the pressing sheet 5;

[0016] The side of the V-shape close to the cavity is a short piece of the pressing sheet 5;

[0017] The connection point between the long film and the short film is an inflection point.

[0018] Optionally, the angle between the long piece and the short piece is 30-60°.

[0019] Optionally, the pressing sheet 5 is in a stressed bending state when the lower base and the upper cover are connected and fixed.

[0020] Optionally, the long piece is thinner than the short piece.

[0021] Optionally, the angle between the short piece and the card board 4 is 10-45°.

[0022] Optionally, the length of the one-way bolt 1 and the pair of clamping plates 4 along the gap direction between the skull 9 and the patch 10 is 3 to 10 mm;

[0023] Optionally, the length of the pressing sheet 5 along the gap direction between the skull 9 and the patch 10 is less than or equal to the length of the clamping plate 4;

[0024] Optionally, the length of the elastic sheet 8 along the gap direction between the skull 9 and the patch sheet 10 is less than or equal to the length of the clamping plate 4;

[0025] Optionally, the length of the cover plate 2 along the direction of the gap between the skull 9 and the patch 10 is greater than or equal to the length of the clamping plate 4 .

[0026] Optionally, the width of the card plate 4 is 1 to 3 mm, and the height is 5 to 10 mm;

[0027] Optionally, the width of the one-way bolt 1 is 1-3 mm.

[0028] In the present application, the lower base body and the upper cover body are both obtained by integral injection molding.

[0029] In the present application, the material of the lower base and the upper cover are both polyetheretherketone (PEEK).

[0030] According to another aspect of the present application, a method for installing the above-mentioned skull repair connection assembly is provided, comprising the following steps:

[0031] S1, tilt the pair of clamping plates 4 toward the skull 9 and the patch 10 respectively, bend and squeeze the elastic sheet 8, and make the lower parts of the pair of clamping plates 4 close to each other, and then put the lower parts of the pair of clamping plates 4 into the gap between the skull 9 and the patch 10;

[0032] S2. Place the one-way bolt 1 on the upper part of the cavity, and press the cover plate 2 to move the one-way bolt 1 downward into the cavity until the lower base and the upper cover are completely fastened.

[0033] Optionally, in step S2, when the one-way bolt 1 enters the cavity, the long piece of the pressing plate 5 is deformed by the compression of the cover plate 2, and then the clamping plate 4 is forced upward with the inflection point of the pressing plate 5 as a fulcrum, so that the buckles 7 on a pair of clamping plates 4 respectively engage the lower end surfaces of the skull 9 and the repair plate 10.

[0034] The beneficial effects of this application include:

[0035] The skull repair connection component provided in the present application has a simple structure. In actual applications, it is used as a connection component to fix the skull and the repair piece. It can be installed in two steps without the need for auxiliary tools. It is easy to operate. After installation, the connection component automatically engages to form a self-locking structure, which can form a smooth and tight connection between the skull and the repair piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic cross-sectional view of the skull repair connection assembly in this application.

[0037] Figure 2 This is a schematic diagram of the installation of the skull repair connection component in this application.

[0038] Figure ID:

[0039] 1. One-way bolt; 2. Cover plate; 3. Protrusion; 4. Clamp plate; 5. Pressing plate; 6. Groove; 7. Buckle; 8. Elastic plate; 9. Skull; 10. Repair plate. DETAILED DESCRIPTION

[0040] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0041] Unless otherwise specified, the raw materials in the examples of this application were purchased through commercial channels.

[0042] Unless otherwise specified, conventional methods were used for testing and instrument settings were those recommended by the manufacturer.

[0043] Example 1 Skull repair connection component structure

[0044] Polyetheretherketone (PEEK) is used for one-piece injection molding. Figure 1 A cranioplasty connection assembly of the structure shown.

[0045] The skull repair connection assembly comprises a lower base and an upper cover; the upper cover comprises a cover plate 2 and a one-way bolt 1; the one-way bolt 1 is fixedly arranged at the lower middle end of the cover plate 2; a plurality of inclined protrusions 3 are arranged on both sides of the one-way bolt 1; the lower base comprises a pair of symmetrically arranged clamping plates 4; the pair of clamping plates 4 are fixedly connected by an elastic sheet 8 bent toward one side of the cavity; a cavity for accommodating the one-way bolt 1 is formed between the opposite surfaces of the pair of clamping plates 4 and the elastic sheet 8; a plurality of grooves 6 for cooperating with the protrusions 3 are arranged on the side of the clamping plate close to the cavity; a buckle 7 for clamping the skull 9 or the repair piece 10 is arranged on the side of the lower end of the clamping plate 4 away from the cavity; the length of the one-way bolt 1, the pair of clamping plates 4, and the elastic sheet 8 along the gap direction between the skull 9 and the repair piece 10 is 5 mm, the length of the cover plate 2 along the gap direction between the skull 9 and the repair piece 10 is 9 mm, and the cover plate 2 is rectangular. The width of the clamping plate 4 is 1.5 mm and the height is 6 mm. The width of the one-way bolt 1 is 2 mm. A pressing piece 5 for lifting the cardboard is arranged on the side of the upper part of the cardboard 4 away from the cavity. The pressing piece 5 is a V-shaped structure composed of a long piece and a short piece. The side away from the cavity is the long piece of the pressing piece 5, and the side close to the cavity is the short piece of the pressing piece 5. The connection between the long piece and the short piece is an inflection point. The angle between the long piece and the short piece is 30°. The thickness of the long piece is smaller than that of the short piece. The angle between the short piece and the cardboard 4 is 45°. The length of the pressing piece 5 along the gap direction between the skull 9 and the patch 10 is 4mm. The protrusion 3 cooperates with the groove 6 to form a locking structure to connect and fix the lower base and the upper cover.

[0046] Example 2 Installation of skull repair connection assembly

[0047] The method for installing the skull repair connection assembly in Example 1 is as follows: Figure 2 Steps shown:

[0048] S1, tilt the pair of clamping plates 4 toward the skull 9 and the patch 10 respectively, bend and squeeze the elastic sheet 8, and make the lower parts of the pair of clamping plates 4 close to each other, and then put the lower parts of the pair of clamping plates 4 into the gap between the skull 9 and the patch 10;

[0049] S2. Place the one-way bolt 1 on the upper part of the cavity, press the cover plate 2 to move the one-way bolt 1 downward into the cavity, and make the inclined protrusion 3 enter the cavity in one direction and be clamped in the groove 6 until the lower base and the upper cover are completely tightened. During the process of the one-way bolt 1 entering the cavity, the long piece of the pressing sheet 5 is squeezed by the cover plate 2 and deformed, and then the clamping plate 4 is forced upward with the inflection point of the pressing sheet 5 as a fulcrum, so that the buckles 7 on the pair of clamping plates 4 are clamped with the lower end surfaces of the skull 9 and the patch 10 respectively.

[0050] Due to the extrusion and deformation of the cover plate 2 by the pressing piece 5 during the installation of the skull repair connection assembly, the clamping plate 4 always maintains an upward pulling force during the installation process, so that the buckle 7 is tightly attached to the lower end surface of the skull 9 and the repair plate 10, preventing the lower end of the clamping plate 4 from being subjected to force penetrating into the skull and damaging the intracranial tissue. After the installation is completed, since the pressing piece 5 remains in a deformed state, in addition to the fixation of the protrusion 3 and the groove 6 between the one-way bolt 1 and the clamping plate 4, a relative pulling force is formed inside the cover plate 2 and the clamping plate 4, so that the cover plate 2 and the clamping plate 4 are tightened.

[0051] This installation method only requires two steps to complete manual installation. The installation process only requires gentle pressing, and no external device is required to maintain the position. There is no need to use auxiliary tools such as screwdrivers for reinforcement operations as in the prior art. The pressing sheet 5 utilizes the elastic properties of the polyetheretherketone (PEEK) material sheet itself, and there is no need to add additional screws or other fixings, which greatly facilitates clinical operations.

[0052] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A skull repair connection assembly, characterized in that: It includes a lower base body and an upper cover body; The upper cover body comprises a cover plate (2) and a one-way bolt (1); The one-way bolt (1) is fixedly arranged at the lower end of the middle part of the cover plate (2); a plurality of inclined protrusions (3) are arranged on both sides of the one-way bolt (1); The lower base comprises a pair of symmetrically arranged clamping plates (4); The pair of clamping plates (4) are fixedly connected by a bent elastic sheet (8); a cavity for accommodating the one-way bolt (1) is formed between the opposite surfaces of the pair of clamping plates (4) and the elastic sheet (8); a plurality of grooves (6) for cooperating with the protrusions (3) are provided on one side of the clamping plate close to the cavity; A buckle (7) for engaging the skull (9) or the patch (10) is provided on a side of the lower end of the clamping plate (4) away from the cavity; A pressing sheet (5) for lifting the card plate is provided on one side of the upper part of the card plate (4) away from the cavity; The pressing sheet (5) is in a stressed bending state when the lower base body and the upper cover body are connected and fixed; The protrusion (3) cooperates with the groove (6) to form a locking structure, so that the lower base body and the upper cover body are connected and fixed.

2. The skull repair connection assembly according to claim 1, characterized in that: The elastic sheet (8) is bent toward one side of the cavity.

3. The skull repair connection assembly according to claim 1, characterized in that: The pressed sheet (5) is a V-shaped structure consisting of long sheets and short sheets; The side of the V-shape away from the cavity is a long piece of the pressing sheet (5); The side of the V-shape close to the cavity is a short piece of the pressing sheet (5); The connection point between the long film and the short film is an inflection point.

4. The skull repair connection assembly according to claim 3, characterized in that: The included angle between the long piece and the short piece is 30-60 degrees.

5. The skull repair connection assembly according to claim 3, characterized in that: The long piece is thinner than the short piece.

6. The skull repair connection assembly according to claim 3, characterized in that: The included angle between the short piece and the card plate (4) is 10 to 45 degrees.

7. The skull repair connection assembly according to claim 1, characterized in that: The length of the one-way bolt (1) and the pair of clamping plates (4) along the gap direction between the skull (9) and the patch (10) is 3 to 10 mm.

8. The skull repair connection assembly according to claim 1, characterized in that: The length of the pressing plate (5) along the direction of the gap between the skull (9) and the repair plate (10) is less than or equal to the length of the clamping plate (4).

9. The skull repair connection assembly according to claim 1, characterized in that: The length of the elastic sheet (8) along the direction of the gap between the skull (9) and the repair sheet (10) is less than or equal to the length of the clamping plate (4).

10. The skull repair connection assembly according to claim 1, characterized in that: The length of the cover plate (2) along the direction of the gap between the skull (9) and the patch (10) is greater than or equal to the length of the clamping plate (4).

11. The skull repair connection assembly according to claim 1, characterized in that: The clamping plate (4) has a width of 1 to 3 mm and a height of 5 to 10 mm.

12. The skull repair connection assembly according to claim 1, characterized in that: The width of the one-way bolt (1) is 1 to 3 mm.

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