Skull defect repair structure based on peek skull repair material structure reconstruction

Abstract

The invention relates to the technical field of peek skull defect repair, in particular to a skull defect repair structure based on structural reconstruction of a peek skull repair material, which comprises a repair patch, a plurality of hourglass-shaped pore channels are formed in the surface of the repair patch, the diameter of the port of a horn-shaped concave groove is larger than that of the tail of the horn-shaped concave groove, the diameter of the port is 1.5 mm, the diameter of the tail of the horn-shaped concave groove is 0.05 mm, and the diameter of the hourglass-shaped pore channels is 1.5 mm. The hourglass-shaped hole channel is designed to be in an hourglass shape with two wide ends and a slender channel, the contact area between the two ends of the hole channel and healthy skull tissue is increased, growth, climbing and combination of granulation tissue are facilitated, meanwhile, attachment, adhesion and healing of soft tissue inside and outside a growth promoting layer repairing material are facilitated, the integration degree of the implant is further improved, and the survival rate of the implant is increased. And the outer surface of the PEEK is covered with the convex structures, so that the contact area between the PEEK material and tissues can be increased, the growth and combination of the tissues are facilitated, and individualized design conforming to aesthetic plastic surgery, thickening design for supplementing temporal muscle atrophy space and mutual embedding of the PEEK material and the skull are carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of PEEK skull defect repair, and particularly to a skull defect repair structure based on the structural reconstruction of PEEK skull repair materials. Background Art

[0002] The self-adhesive hemostatic artificial dura mater repair patch can simplify the dura mater repair process during surgery, reduce the requirements for doctors' skills, improve the watertightness of dura mater repair, and can be applied to difficult-to-suture sites and dura mater defect sites.

[0003] This product can also be used for the adhesion between the skull and the dura mater, partially replacing the traditional dura mater suture suspension, to stop the venous bleeding between the dura mater and the skull, avoid the potential damage to brain tissue by the suture needle during the suspension process, shorten the operation time, reduce the operation anesthesia time, reduce the application of anesthetic drugs, reduce the damage and pain of the operation anesthesia to the patient, and reduce the corresponding medical expenses.

[0004] Skull defect is a common condition after surgical treatment of various cerebrovascular diseases. Early skull repair can not only provide physical protection for brain tissue, restore the beauty of the craniofacial region, but also reconstruct the balance between intracranial and atmospheric pressure and improve cerebrospinal fluid circulation. Currently, the commonly used repair material is PEEK material. However, it has been found in clinical applications that the design of traditional PEEK materials is not conducive to clinical use. Moreover, patients undergoing repair surgery with PEEK materials often have subcutaneous hydrops after surgery, and subcutaneous hydrops can increase the risks of infection, bleeding, etc., resulting in repair failure. To address the above problems, we improved the surgical steps and reconstructed the structure of the PEEK skull repair material. By using the modified PEEK repair material and multi-layer suspension technology, multi-layer absorbable sutures were used between the PEEK material and the dura mater, temporalis muscle, and epicranial aponeurosis respectively, and it was found that the incidence of subcutaneous hydrops after PEEK repair could be significantly reduced, the prognosis and quality of life of patients could be improved, and unnecessary medical expenses could be reduced. Summary of the Invention

[0005] The purpose of the present invention is to provide a skull defect repair structure based on the structural reconstruction of PEEK skull repair materials to solve the problems raised in the above background art.

[0006] A skull defect repair structure based on the structural reconstruction of PEEK skull repair materials includes a repair patch. A plurality of hourglass-shaped channels are formed on the surface of the repair patch, and the hourglass-shaped channels are arranged in an array. A plurality of needle nose suspension holes are formed on the surface of the repair patch in an alternating manner with the hourglass-shaped channels;

[0007] Both ends of the hourglass-shaped channel are opened in the shape of a trumpet-shaped recess, and the diameter of the trumpet-shaped recess port is larger than the diameter of the end tail, and the port diameter is 1.5 mm and the end tail diameter is 0.05 mm.

[0008] Preferably, a titanium mesh layer is provided inside the repair patch, and a sterilization layer is provided at the bottom end of the titanium mesh layer.

[0009] Preferably, a growth-promoting layer is provided on the outer surface of the repair patch.

[0010] Preferably, the thickness of the repair patch is 2-8 mm.

[0011] Preferably, the thickness of the outer edge of the repair patch is less than the thickness of the inner wall. The thickness of the outer edge is 0.1 mm, and the thickness of the inner wall is greater than 0.1 mm and less than 0.15.

[0012] Preferably, the shape of the needle nose suspension hole is in the shape of a needle nose. The diameter of the front through hole is larger than the diameter of the rear hole. The aperture of the needle nose suspension hole is 0.2-0.5 mm.

[0013] Preferably, a plurality of titanium alloy fixing pieces are installed on the outer edge of the repair patch, and an installation hole is opened at one end of each titanium alloy fixing piece.

[0014] Preferably, the repair patch is composed of a first titanium alloy sheet, a second titanium alloy sheet, a third titanium alloy sheet, and a fourth titanium alloy sheet. A plurality of first combination slots and two second combination slots are opened on the two right-angled edges of the first titanium alloy sheet, the second titanium alloy sheet, the third titanium alloy sheet, and the fourth titanium alloy sheet. Clamping column parts are installed inside the first combination slots and the second combination slots.

[0015] Preferably, the first titanium alloy sheet, the second titanium alloy sheet, the third titanium alloy sheet, and the fourth titanium alloy sheet are combined and spliced, and the first combination slots and the second combination slots are combined into splicing slots in pairs. The inside of the splicing slots is clamped and connected to the clamping holes opened on the plate surface of the titanium alloy clamping plate through the clamping column parts.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The present invention provides a skull defect repair structure based on the structural reconstruction of peek skull repair materials:

[0018] By designing the hourglass-shaped channel to be wider at both ends and slender in the middle, the contact area between the two ends of the channel and the healthy cranial tissue is increased, which is more conducive to the growth, climbing and combination of granulation tissue. At the same time, it is beneficial for the soft tissue on both sides of the repair material in the promoting layer to adhere and heal, further improving the integration of the implant. The outer surface of PEEK is covered with convex structures, which can also increase the contact area between the PEEK material and the tissue, facilitating tissue growth and combination. Individualized design for cosmetic plastic surgery, thickening design to supplement the temporalis muscle atrophy space, and mutual interlocking of the PEEK material and the skull are carried out to simulate the normal structural shape, which helps to maintain or restore the aesthetics while improving the comfort. A bioabsorbable connecting piece is placed around the PEEK repair material to eliminate metal connections, reduce foreign body rejection reactions and lower the operation difficulty, enabling it to better combine with the surrounding tissues and promote the healing process. The PEEK repair material is suspended from the galea aponeurotica by using absorbable sutures through the needle nose suspension holes. The "needle nose" - like structure for structural reconstruction is used to fix the absorbable sutures. The hardness of the repair patch is increased by setting a titanium mesh layer to avoid the potential possibility of the suture needle damaging the brain tissue during the suture suspension process. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is one of the schematic structural diagrams of the present invention;

[0021] Figure 3 is a partial structural schematic diagram of A of the present invention;

[0022] Figure 4 is a schematic structural diagram of the hourglass-shaped channel of the present invention;

[0023] Figure 5 is a schematic structural diagram of the horn-shaped concave groove of the present invention;

[0024] Figure 6 is a schematic structural diagram of the first combined slotted structure of the present invention;

[0025] Figure 7 is a schematic structural diagram of the clamping column part of the present invention;

[0026] Figure 8 is a schematic structural diagram of the titanium alloy fixing part of the present invention;

[0027] Figure 9 is a schematic structural diagram of the third titanium alloy sheet of the present invention;

[0028] Figure 10 is a schematic structural diagram of the titanium alloy clamping plate of the present invention.

[0029] In the figure: 1. Repair patch; 2. Hourglass-shaped channel; 3. Engagement hole; 4. Needle nose suspension hole; 5. Horn-shaped depression groove; 6. Titanium mesh layer; 7. Sterilization layer; 8. Growth promotion layer; 9. Titanium alloy fixing piece; 10. Mounting hole; 11. First titanium alloy sheet; 12. Second titanium alloy sheet; 13. Third titanium alloy sheet; 14. Fourth titanium alloy sheet; 15. First combined slotted groove; 16. Second combined slotted groove; 17. Splicing groove; 18. Engagement column piece; 19. Titanium alloy engagement plate. Detailed implementation mode

[0030] Next, specific embodiments will be combined with the attached Figures 1-10 , and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0031] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation of the present invention.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Such as Figures 1-10As shown in the figure, the skull defect repair structure based on the structural reconstruction of the PEEK skull repair material proposed by the present invention includes a repair patch 1. A number of hourglass-shaped channels 2 are provided on the surface of the repair patch 1. The hourglass-shaped channels 2 are arranged in an array. A number of needle-nose suspension holes 4 are staggeredly provided on the surface of the repair patch 1 and the hourglass-shaped channels 2.

[0035] The opening shapes at both ends of the hourglass-shaped channel 2 are both trumpet-shaped concave grooves 5. The diameter of the trumpet-shaped concave groove 5 at the port is larger than the diameter at the end tail. The port diameter is 1.5 mm and the end tail diameter is 0.05 mm.

[0036] A titanium mesh layer 6 is provided inside the repair patch 1. A sterilization layer 7 is provided at the bottom end of the titanium mesh layer 6.

[0037] A growth-promoting layer 8 is provided on the outer surface of the repair patch 1.

[0038] The thickness of the repair patch 1 is 2 - 8 mm.

[0039] The thickness of the outer edge of the repair patch 1 is less than the thickness of the inner wall. The thickness of the outer edge is 0.1 mm, and the thickness of the inner wall is greater than 0.1 mm and less than 0.15 mm.

[0040] The shape of the needle-nose suspension hole 4 is a needle-nose shape. The diameter of the front through-hole is larger than the diameter of the rear hole. The aperture of the needle-nose suspension hole 4 is 0.2 - 0.5 mm.

[0041] A number of titanium alloy fixing parts 9 are installed on the outer edge of the repair patch 1. An installation hole 10 is provided at one end of each titanium alloy fixing part 9.

[0042] During specific use, skull defects are a common situation after surgical treatment of various cerebrovascular diseases. Improve the surgical steps and reconstruct the structure of the PEEK skull repair material. By using the modified PEEK repair material and multi-layer suspension technology, multi-layer absorbable sutures are used between the PEEK material and the dura mater, temporalis muscle, and epicranial aponeurosis respectively, reducing the incidence of subcutaneous fluid accumulation after PEEK repair, improving the prognosis and quality of life of patients, reducing unnecessary medical expenses, and the hourglass-shaped channel 2 is designed as an hourglass shape with relatively wide ends and a relatively slender channel of the trumpet-shaped concave groove 5, increasing the contact area between both ends of the channel and healthy skull tissue, which is more conducive to the growth, climbing, and combination of granulation tissue. The absorbable suture is suspended between the PEEK repair material and the epicranial aponeurosis through the use of the needle-nose suspension hole 4. The "needle-nose" structure of the structural reconstruction is used to fix the absorbable suture. The hardness of the repair patch 1 is increased by setting the titanium mesh layer 6 to avoid the potential possibility of the suture needle damaging the brain tissue during the suture suspension process. The sterilization layer 7 is provided to prevent bacterial adhesion to the brain tissue filling and repair, avoiding infection. The growth-promoting layer 8 is provided to increase the contact area with the tissue, facilitating tissue growth and combination. The repair patch 1 is installed and fixed on the skull by setting the titanium alloy fixing parts 9 and the installation holes 10.

[0043] The repair patch 1 is composed of a first titanium alloy sheet 11, a second titanium alloy sheet 12, a third titanium alloy sheet 13, and a fourth titanium alloy sheet 14. A number of first combined slots 15 and two second combined slots 16 are provided on the right-angled edges on both sides of the first titanium alloy sheet 11, the second titanium alloy sheet 12, the third titanium alloy sheet 13, and the fourth titanium alloy sheet 14. Engagement column members 18 are installed inside both the first combined slots 15 and the second combined slots 16.

[0044] The first titanium alloy sheet 11, the second titanium alloy sheet 12, the third titanium alloy sheet 13, and the fourth titanium alloy sheet 14 are combined and spliced together, and the first combined slots 15 and the second combined slots 16 are combined pairwise to form splicing slots 17. The inside of the splicing slots 17 is engaged and connected to the engagement holes 3 provided on the plate surface of the titanium alloy engagement plate 19 through the engagement column members 18.

[0045] During specific use, when performing repair and filling of the brain bone structure, the size of the repair patch 1 is fixed. When large-area repair and filling are required, the area of the repair patch 1 needs to be adjusted and enlarged to meet the repair needs. According to the repair area, the spacing between the first titanium alloy sheet 11, the second titanium alloy sheet 12, the third titanium alloy sheet 13, and the fourth titanium alloy sheet 14 is adjusted, and then they are spliced through the corresponding first combined slots 15 and the corresponding second combined slots 16 to form splicing slots 17. Then, the engagement holes 3 on the titanium alloy engagement plate 19 are engaged with the engagement column members 18 inside the splicing slots 17 to fix the first titanium alloy sheet 11, the second titanium alloy sheet 12, the third titanium alloy sheet 13, and the fourth titanium alloy sheet 14, so as to perform repair and filling of the brain structure.

[0046] It should be noted that in this article, the term "including", "comprising", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, article, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0047] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A skull defect repair structure based on the reconstruction of the peek skull repair material structure, comprising a repair piece (1), characterized in that: The surface of the patch (1) is provided with a plurality of hourglass-shaped channels (2), which are arranged in an array, and the surface of the patch (1) is provided with a plurality of needle-nose hanging holes (4) which are staggered with the hourglass-shaped channels (2); The openings at both ends of the hourglass-shaped channel (2) are both horn-shaped recessed grooves (5), and the port diameter of the horn-shaped recessed groove (5) is larger than the end diameter, and the port diameter is 1.5 mm and the end diameter is 0.05 mm.

2. The skull defect repair structure based on the peek skull repair material structure reconstruction according to claim 1, characterized in that: A titanium mesh layer (6) is arranged on the inner side of the patch (1), and a sterilization layer (7) is arranged on the bottom end of the titanium mesh layer (6).

3. The skull defect repair structure based on the peek skull repair material structure reconstruction according to claim 1, characterized in that: The outer surface of the patch (1) is provided with a growth-promoting layer (8), and the surface of the growth-promoting layer (8) is provided with a plurality of protrusions. The thickness of the patch (1) is 2-8 mm.

4. The skull defect repair structure based on the peek skull repair material structure reconstruction according to claim 1, characterized in that: The thickness of the outer edge of the patch (1) is smaller than the thickness of the inner wall. The thickness of the outer edge is 0.1 mm, and the thickness of the inner wall is greater than 0.1 mm and less than 0.

15.

5. The skull defect repair structure based on the peek skull repair material structure reconstruction according to claim 1, characterized in that: The needle nose hanging hole (4) is in the shape of a needle nose, the diameter of the front through hole is larger than the diameter of the rear aperture, and the aperture of the needle nose hanging hole (4) is 0.2-0.5 mm.

6. The skull defect repair structure based on the peek skull repair material structure reconstruction according to claim 1, characterized in that: A plurality of titanium alloy fixing pieces (9) are installed on the outer edge of the patch (1), and a mounting hole (10) is provided at one end of each of the titanium alloy fixing pieces (9).

7. The skull defect repair structure based on the peek skull repair material structure reconstruction according to claim 1, characterized in that: The repair sheet (1) is composed of a first titanium alloy sheet (11), a second titanium alloy sheet (12), a third titanium alloy sheet (13), and a fourth titanium alloy sheet (14); a plurality of first combination slots (15) and two second combination slots (16) are provided on right-angled edges on both sides of the first titanium alloy sheet (11), the second titanium alloy sheet (12), the third titanium alloy sheet (13), and the fourth titanium alloy sheet (14); and a snap-fit ​​column (18) is installed inside the first combination slot (15) and the second combination slot (16).

8. The skull defect repair structure based on the peek skull repair material structure reconstruction according to claim 7, characterized in that: The first titanium alloy sheet (11), the second titanium alloy sheet (12), the third titanium alloy sheet (13), and the fourth titanium alloy sheet (14) are assembled and spliced, and the first combined slots (15) and the second combined slots (16) are combined in pairs to form a splicing slot (17), and the interior of the splicing slot (17) is snap-connected to a snap-in hole (3) provided on the surface of a titanium alloy snap-in plate (19) via a snap-in column (18).

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