Skull repairing body and skull repairing system suitable for children

Abstract

The utility model relates to a skull repairing body suitable for children. The skull repairing body comprises a covering part and an embedding part arranged on the lower surface of the covering part, the covering part comprises a contact area which is positioned above the embedding part and corresponds to the embedding part, and a plurality of extension parts which are distributed on the periphery of the contact area; wherein a containing cavity is formed between every two adjacent extension parts, and the containing cavities are used for installing non-rigid fixing devices. The utility model further relates to a skull repairing system comprising the repairing body. According to the skull repairing body, non-rigid fixation is adopted, the risk that rigid fixation possibly limits growth and development of the autologous skull and causes injury or infection is avoided, the covering part used for covering the autologous skull around the bone window is arranged, the repairing body obtains bearing force from the autologous skull, and the repairing body can be used for repairing the autologous skull. The problem that in the skull growth and development process of children, due to the fact that the defect area of the skull becomes large, fixing of the non-rigid fixing device fails, and then the skull repairing body falls off can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments more particularly to a skull repair body and skull repair system suitable for children. BACKGROUND

[0002] The skull is the hardest part of the human head, and its main function is to protect the brain tissue and maintain the normal physiological pressure between the inside and outside of the skull. When the skull is removed due to tumor, trauma or other reasons, the brain tissue loses its natural barrier, which may cause a series of problems such as local tissue swelling, cerebrospinal fluid circulation and changes in cerebral hemodynamics. Skull repair surgery is an important surgical method to solve skull defects caused by skull tumors, infections, trauma or congenital factors, and its purpose is to protect brain function, improve appearance, and most importantly, to promote the establishment of a dynamic balance environment for brain blood flow and cerebrospinal fluid.

[0003] At present, the skull defect repair surgery for adult patients is quite mature, but for children patients, there are still great challenges in skull repair because their skulls are in dynamic growth. During the growth and development period, the skull defect area left after the operation may gradually increase with growth and development, leading to the failure of the fixed site of the skull repair body and the autologous skull, and there is a possibility of loosening or even falling off the repair body. Therefore, children under the age of 12 with skull defects need regular follow-up examination, and if necessary, a second operation is needed to remove the original skull repair body and re-implant a new skull repair body, which will undoubtedly increase the psychological burden and economic pressure on the families of sick children.

[0004] In the current skull defect repair surgery, the fixation device for fixing the repair body and the autologous skull can be divided into two types: non-rigid fixation device and rigid fixation device. Among them, the non-rigid fixation device such as skull lock includes upper disc, lower disc, suture or strap, and when used, the upper and lower discs are clamped to fix the repair body and autologous skull by tightening the strap or suture. The rigid fixation device such as skull nail and connecting piece needs to fix the connecting piece through the skull nail to realize the connection and fixation of the skull repair body and the autologous skull, but the skull nail will cause damage to the autologous skull, and even cause infection at the fixed site; and the skull nail fixed site needs to avoid blood vessels and nerves, and the wrong fixed position may cause damage to these structures; in addition, the skull nail will cause compression to the scalp, and if the thickness of the scalp is insufficient or the fixed pressure is too large, it may cause pressure necrosis of the scalp. In addition, for children with skull defects, the rigid fixation device may limit the growth and development of the autologous skull. SUMMARY

[0005] The utility model discloses a skull repair body and skull repair system suitable for children, which are capable of avoiding the risk of limiting the growth and development of autologous skull, causing damage or infection caused by the use of rigid fixing device, and preventing the skull repair body from falling off caused by the failure of non-rigid fixing device due to the increase of skull defect area during the growth and development of children's skull.

[0006] To solve the above technical problems, the utility model adopts the technical scheme of a skull repair body suitable for children, which comprises a covering part and an embedded part arranged on the lower surface of the covering part.

[0007] In the above technical scheme, the size of the embedded part is consistent with the size of the skull defect part (i.e., the bone window), and the embedded part is installed in the bone window during use, and the extension part of the covering part covers the autologous skull around the bone window. The non-rigid fixing device is placed in the accommodating cavity to connect the entire skull repair body and the autologous skull, and the use of the non-rigid fixing device for fixation can avoid the risk of limiting the growth and development of autologous skull, causing damage or infection caused by the rigid fixing method.

[0008] After the skull repair surgery, the area of the skull defect part of the children's skull may gradually increase with the growth and development of the skull, so that a small gap is formed between the autologous skull and the embedded part. The outward pulling force of the autologous skull at the fixing point on the skull repair body may cause a certain non-rigid fixing point to fail, and there is a risk of the skull repair body falling off. The skull repair body of the utility model has the extension part of the covering part covering the autologous skull around the bone window and having a certain covering area, which is larger than the gap formed, so that the repair body is supported by the autologous skull, and the problem of the skull repair body falling off caused by the failure of non-rigid fixing device due to the increase of skull defect area during the growth and development of children's skull can be prevented.

[0009] Further, the extension part is provided with at least three, and at least three accommodating cavities are formed. The non-rigid fixing device is installed in the accommodating cavity to provide more than three fixing points for the repair body, so that the fixation between the repair body and the autologous skull is more firm.

[0010] Further, the extension part is circumferentially and equidistantly distributed, and can uniformly cover the autologous skull around the bone window.

[0011] Further, the embedding part and the covering part are integrally formed, or the embedding part and the covering part are detachably fixedly connected.

[0012] Further, the embedding part and the covering part are integrally formed, or the embedding part and the covering part are detachably fixedly connected.

[0013] Further, the thickness of the covering part is smaller than the thickness of the embedding part. Generally, since the size of the embedding part is consistent with the size of the skull defect part, the thickness of the embedding part is basically consistent with the autologous skull, but since the covering part covers the autologous skull around the bone window, it means that the covering part will protrude from the autologous skull. Since the thickness of the covering part is set to be smaller than the thickness of the embedding part, the thickness of the covering part can be avoided to be too large to cause the skull repair to be not beautiful.

[0014] Further, the thickness of the covering part is 0.5-1.5mm, and the width of the extension part is 2-10mm.

[0015] Further, the outer edge of the covering part is provided as an arc-shaped structure. The arc-shaped structure can be that the upper and lower end faces at the edge of the covering part are both rounded, or the edge of the covering part is provided as an arc.

[0016] Further, the repair body is made of polyether ether ketone material. The polyether ether ketone material has an elastic modulus close to the autologous bone, and has a better protection effect on brain damage caused by trauma.

[0017] A skull repair system suitable for children, comprising the skull repair body and a non-rigid fixing device for fixing the skull repair body on the autologous skull.

[0018] Compared with the prior art, the skull repair system has the beneficial effects that:

[0019] The skull repair body of the utility model adopts non-rigid fixation, avoids the risk that rigid fixation mode may limit autologous skull growth and development, damage or infection, and through setting the covering part and the embedded part, the covering part is used for covering the autologous skull around the bone window, so that the repair body gets the supporting force from the autologous skull, can prevent the problem that the non-rigid fixation device is fixed invalidly due to the larger defect area of the skull in the process of children skull growth and development, and further causes the skull repair body to fall off. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure bottom view of a skull repair body suitable for children of the utility model;

[0021] Figure 2 It is a structure side view of a skull repair body suitable for children of the utility model;

[0022] Figure 3 It is a second structure top view of a skull repair body suitable for children of the utility model;

[0023] Figure 4 It is a third structure bottom view of a skull repair body suitable for children of the utility model;

[0024] Figure 5 It is Figure 4 Sectional view along A-A direction;

[0025] Figure 6 It is a structure schematic view of a skull repair system suitable for children of the utility model.

[0026] In the drawing:

[0027] 100-covering part;110-extension part;120-receiving cavity;130-convex structure;200-embedded part;300-skull lock. DETAILED DESCRIPTION

[0028] The drawings are only for example illustration, and cannot be understood as the limitation of the patent;In order to better illustrate the embodiment, some components of the drawing may be omitted, enlarged or reduced, and do not represent the size of the actual product;For those skilled in the art, it is understandable that some well-known structures and their description in the drawing may be omitted.The position relation described in the drawing is only for example illustration, and cannot be understood as the limitation of the patent.

[0029] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0031] Example 1

[0032] like Figure 1 and Figure 2 The following is an embodiment 1 of a cranial repair device suitable for children, including a covering portion 100 and an insert portion 200 disposed on the lower surface of the covering portion 100; the covering portion 100 includes a contact area located above the insert portion 200 and corresponding thereto, and a plurality of extension portions 110 distributed around the contact area; wherein, a receiving cavity 120 is provided between adjacent extension portions 110, and the receiving cavity 120 is used to install a non-rigid fixation device.

[0033] In this embodiment, the extension portion 110 is provided with three equidistant portions in a circumferential direction, thereby forming three receiving cavities 120. Three non-rigid fixation devices can be placed in the receiving cavities 120 to provide three fixation points for the repair, making the fixation between the repair and the autologous skull more secure.

[0034] Specifically, the thickness of the covering portion 100 is less than the thickness of the embedding portion 200. Generally, since the size of the embedding portion 200 is consistent with the size of the skull defect, the thickness of the embedding portion 200 will be basically consistent with the thickness of the autologous skull. However, since the covering portion 100 will cover the autologous skull, it means that the covering portion 100 will protrude from the autologous skull. Therefore, setting the thickness of the covering portion 100 to be smaller than the thickness of the embedding portion 200 can avoid the covering portion 100 being too thick and causing an unsightly skull repair site.

[0035] In this embodiment, the cranial repair body is made of polyetheretherketone (PEEK). The insert portion 200 and the cover portion 100 are integrally formed; the thickness H of the cover portion 100 is 0.5 mm; the extension portion 110 is fan-shaped, with a width W of 8 mm and an arc length L of 30 mm.

[0036] The working principle of this embodiment:

[0037] The size of the insert 200 is consistent with the size of the skull defect. During use, the insert 200 is installed into the bone window of the autologous skull, and the extension 110 of the covering 100 covers the autologous skull around the bone window. Then, the skull lock 300 is used to fix the entire prosthesis and autologous skull within the receiving cavity 120. After cranioplasty, the area of ​​the skull defect in children may gradually increase with skull growth, creating a small gap between the autologous skull and the insert 200. Because the autologous skull at the fixation point exerts an outward traction force on the cranioplasty, a fixation point may fail, potentially leading to the cranioplasty detaching. However, since the extension portion 110 of the covering portion 100 has covered the autologous skull around the bone window and has a certain covering area, which is larger than the gap formed, the repair body receives support from the autologous skull. This can prevent the problem of non-rigid fixation device failure and subsequent skull repair body detachment caused by the increase in the defect area of ​​the skull during the growth and development of the child's skull.

[0038] The beneficial effects of this embodiment:

[0039] By employing non-rigid fixation, the risks of rigid fixation, such as limiting the growth and development of the autologous skull, causing damage or infection, are avoided. Furthermore, by providing a covering portion 100 and an embedding portion 200, with the covering portion 100 covering the autologous skull around the bone window, the repair receives support from the autologous skull. This can prevent the non-rigid fixation device from failing due to the increasing size of the skull defect area during the growth and development of the child's skull, thus preventing the skull repair from falling off.

[0040] Example 2

[0041] like Figure 3 The illustration shows an embodiment 2 of a cranial repair device suitable for children. Based on embodiment 1, the difference lies in that the extension portion 110 is elongated, with rounded corners at both the top and bottom edges, a width W of 5 mm, and a thickness H of 1 mm for the covering portion 100. The remaining working principles and effects of this embodiment are consistent with embodiment 1.

[0042] Example 3

[0043] Example 3 of a craniotomy suitable for children, such as Figure 4 and Figure 5 As shown, based on Embodiment 1, the difference from Embodiment 1 is that the embedding part 200 and the covering part 100 are detachably and fixedly connected.

[0044] Specifically, the embedding part 200 is connected with the covering part 100 through a mortise and tenon structure. The embedding part 200 is customized according to the actual size of the skull defect part of the user, while the covering part 100 can be made into different types of standard parts. According to actual needs, the covering part 100 of the appropriate type is connected with the embedding part 200, which can be directly used for surgery, thereby reducing the customization cost. Since the prosthesis is made of polyether ether ketone material, the covering part 100 can deform to a certain extent when connected with the embedding part 200, thereby improving the matching degree of the entire prosthesis and the skull defect part.

[0045] In the embodiment, the embedding part 200 is provided with a concave structure, and the covering part 100 is provided with a convex structure 130 matched with the concave structure. The concave structure is a groove, and the convex structure 130 is a convex part in interference fit with the groove. Further, the groove and the convex part are both provided with a matching bevel, and the bottom of the groove is provided with a protrusion, so as to facilitate the installation of the covering part 100 and the embedding part 200, and make the connection of the two more compact.

[0046] In the embodiment, the thickness of the covering part 100 is 1.5 mm, and the width of the extension part 110 is 10 mm.

[0047] The other technical features, working principles and effects of the embodiment are the same as those of the embodiment 1.

[0048] Embodiment 4

[0049] A skull prosthesis system suitable for children, as shown in Figure 6 The skull prosthesis system comprises a non-rigid fixing device and the skull prosthesis of any one of the above embodiments. The non-rigid fixing device comprises a skull lock 300 installed in the accommodating cavity 120 for fixing the skull prosthesis to the autologous skull.

[0050] The working principle or working process of the skull prosthesis system in the embodiment is as follows:

[0051] The embedding part 200 is customized according to the skull defect part, so that the size of the embedding part 200 is consistent with the size of the skull defect part. In use, the embedding part 200 is installed and embedded at the defect part of the autologous skull, and the extension part 110 of the covering part 100 covers the autologous skull around the bone window. Then, the skull lock 300 is installed in the accommodating cavity 120 to connect the prosthesis and the autologous skull.

[0052] The remaining features of the embodiment are the same as those of any one of the above embodiments.

[0053] The beneficial effect of the embodiment is that by adopting the non-rigid fixation, the risk that the rigid fixation mode may limit the growth and development of the autologous skull, cause damage or infection is avoided, and by arranging the covering portion 100 and the embedded portion, the covering portion 100 is arranged to cover the autologous skull around the bone window, so that the repair body is supported from the autologous skull, and the problem that the non-rigid fixation device is fixed to fail due to the increasing defect area of the skull during the growth and development of the skull of a child, and then the skull repair body is caused to fall off can be prevented.

[0054] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A skull repair body for children, characterized by comprising: The cranium repair body comprises a covering part (100) and an embedded part (200) arranged on the lower surface of the covering part (100); the covering part (100) comprises a contact area corresponding to the embedded part (200) and a plurality of extension parts (110) distributed on the periphery of the contact area; wherein, a containing cavity (120) is arranged between adjacent extension parts (110), and the containing cavity (120) is used for mounting a non-rigid fixing device.

2. The skull repair body according to claim 1, characterized in that The extension part (110) is provided with at least three.

3. The skull repair body according to claim 2, characterized in that The extension part (110) is distributed in a circumferential direction at equal intervals.

4. The skull repair body according to claim 1, characterized in that, The embedded part (200) and the covering part (100) are integrally formed, or the embedded part (200) and the covering part (100) are detachably fixedly connected.

5. The skull repair body according to claim 4, characterized in that The embedded part (200) and the covering part (100) are connected through a mortise and tenon structure; wherein, the embedded part (200) is provided with a concave structure, and the covering part (100) is provided with a convex structure (130) matched with the concave structure.

6. The skull repair body according to any one of claims 1 to 5, characterized in that The thickness of the covering part (100) is less than the thickness of the embedded part (200).

7. The skull repair body according to claim 6, characterized in that The thickness of the covering part (100) is 0.5-1.5mm, and the width of the extension part (110) is 2-10mm.

8. The skull repair body according to any one of claims 1 to 5, characterized in that The outer edge of the covering part (100) is provided with an arc structure.

9. The skull repair body according to any one of claims 1 to 5, characterized in that The cranium repair body is made of polyether ether ketone material.

10. A skull repair system for children, characterized in that, The cranium repair body comprises a covering part (100) and an embedded part (200) arranged on the lower surface of the covering part (100); the covering part (100) comprises a contact area corresponding to the embedded part (200) and a plurality of extension parts (110) distributed on the periphery of the contact area; wherein, a containing cavity (120) is arranged between adjacent extension parts (110), and the containing cavity (120) is used for mounting a non-rigid fixing device.

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