Skull window bone sheet coating instrument
By designing a cranial window bone fragment covering device, and using elastic coverings and buffer layers to alleviate direct contact between the edges of the bone fragments and the scalp, the problems of discomfort and pressure sores when wearing 3D printed bone fragments are solved, thus improving comfort and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-24
- Publication Date
- 2026-03-31
AI Technical Summary
Existing 3D-printed bone pieces are made of relatively hard materials. When worn, the edges of the bone pieces come into contact with the patient's scalp, causing strong discomfort. Long-term wear may lead to pressure sores.
A cranial window bone fragment wrapping device is designed, which uses an elastic wrapping component and a buffer layer. The buffer layer is closely attached to the edge of the bone fragment and between it and the scalp to reduce direct contact and reduce pressure.
It reduces patient discomfort, lowers the probability of pressure sores, and improves wearing comfort and safety.
Smart Images
Figure CN224056157U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a cranial window bone sheet covering device. Background Technology
[0002] After craniectomy, patients are left with only the scalp and brain tissue in the surgical area. Typically, a custom-made 3D-printed bone graft is used to protect the head and prevent damage or compression of internal tissues, thus avoiding problems such as cerebral hemorrhage, brain tissue leakage, and cerebral edema. However, because 3D-printed bone grafts are relatively hard, their edges directly contact the scalp after being worn, causing significant discomfort. Prolonged wear can also lead to pressure sores due to the bone edges pressing against the edges of the skull defect. Utility Model Content
[0003] To address the aforementioned issues, this application discloses a cranial window bone fragment covering device that can cover the bone fragment, providing a buffer between the edge of the bone fragment and the patient's scalp, reducing patient discomfort, and simultaneously lowering the probability of pressure sores forming in the pressure area at the edge of the bone fragment.
[0004] To achieve the above objectives, this application adopts the following technical solution, which includes:
[0005] The first elastic covering member includes a covering portion and an elastic contractile portion surrounding the covering portion. The elastic contractile portion is capable of elastically closing to form a receiving space between the covering portion and the elastic contractile portion that can accommodate the bone fragment. A buffer layer is further provided on the inner side of the covering portion along the connection position between the covering portion and the elastic contractile portion, so that the buffer layer can be tightly attached to the edge of the bone fragment when the elastic contractile portion is elastically closed.
[0006] In one illustrative embodiment of a cranial window bone fragment covering device, it further includes: a second elastic covering member, the second elastic covering member including a flexible contact portion and a connecting portion surrounding the flexible contact portion, wherein the connecting portion is elastically contractible, and the inner side of the connecting portion can be connected to the outer side of the covering portion so that, after connection, the flexible contact portion covers the receiving space.
[0007] In one illustrative embodiment of a cranial window bone fragment covering device, the elastic contractile portion includes:
[0008] An elastic connecting layer has a connecting side and a closing side, wherein the connecting side is connected to the covering portion, and the closing side has an internal interlayer.
[0009] An annular elastic band is disposed within the interlayer, wherein the annular elastic band can provide an elastic contracting force to the contracting side so that the contracting side is always in a contracted state.
[0010] In one illustrative embodiment of a cranial window bone fragment covering device, a first connector is provided on the outer side of the covering part;
[0011] The inner side of the connecting part is provided with a second connecting member, wherein the first connecting member and the second connecting member are detachably connected.
[0012] In one illustrative embodiment of a cranial window bone fragment wrapping device, the first connector includes: a Velcro hook surface;
[0013] The second connector includes a hook and loop side that is attached to the hook and loop side.
[0014] In one illustrative embodiment of a cranial window bone fragment covering device, the width of the hook side of the hook and loop fastener is greater than the width of the loop side of the hook and loop fastener.
[0015] In one illustrative embodiment of a cranial window bone graft covering device, the flexible contact portion includes:
[0016] A flexible base layer and a flexible dressing, wherein the connecting portion is disposed around the flexible base layer, wherein the flexible base layer further has a buffer side facing the receiving space, and the flexible dressing is disposed on the buffer side.
[0017] In one illustrative embodiment of a cranial window bone fragment covering device, the buffer layer includes a sponge layer.
[0018] In one illustrative embodiment of a cranial window bone fragment wrapping device, the flexible dressing includes a foam dressing.
[0019] In one illustrative embodiment of a cranial window bone fragment covering device, several third connectors are further provided on the outer side of the connecting portion.
[0020] The following description, in a clear and easy-to-understand manner and with reference to the accompanying drawings, will further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of a cranial window bone sheet covering device. Attached Figure Description
[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0022] Figure 1 This is a schematic structural diagram illustrating one embodiment of a cranial window bone fragment covering device.
[0023] Figure 2 This is a schematic diagram illustrating the structure of the first elastic covering member covering the bone fragment.
[0024] Figure 3 This is a cross-sectional view illustrating the first elastic covering element covering the bone fragment.
[0025] Figure 4 Used to explain Figure 3 Enlarged view of point A.
[0026] Figure 5 This is a schematic diagram illustrating the structure of the second elastic covering.
[0027] Figure 6 This is a schematic diagram illustrating the structure after the second elastic covering is combined with the first elastic covering.
[0028] Figure 7 Used to explain Figure 6 Schematic diagram of the structure in the BB direction.
[0029] Figure 8 This is a schematic diagram illustrating the structure after the flexible contact part is attached to the bone plate.
[0030] Figure 9 This diagram illustrates the positional relationship between the first connector and the second connector.
[0031] Figure 10 This is a schematic diagram illustrating the structure of the flexible contact part.
[0032] Figure 11 This is a schematic diagram illustrating the structure of the outer side of the connecting part.
[0033] Label Explanation
[0034] 1. First elastic covering; 11. Covering part; 12. Elastic contraction part; 121. Elastic connecting layer; 122. Annular elastic band; 14. Buffer layer; 15. First connector; 2. Second elastic covering; 21. Flexible contact part; 211. Flexible base layer; 212. Flexible dressing; 22. Connecting part; 23. Second connector; 3. Bone plate. Detailed Implementation
[0035] To provide a clearer understanding of the technical features, objectives, and effects of this application, specific embodiments of this application are now described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate components with the same or similar structures but the same function.
[0036] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.
[0037] After craniectomy, patients only have scalp and brain tissue left in the surgical area. To protect the brain tissue, a "bone plate" is usually customized for the patient using 3D printing technology according to the shape of the skull defect. The bone plate is then placed on the skull defect site using a net bag.
[0038] Figure 1 This is a schematic structural diagram illustrating one embodiment of a cranial window bone fragment 3 wearing device. Figure 2 This is a schematic diagram illustrating the structure of the first elastic covering member covering the bone fragment. Figure 3 This is a cross-sectional view illustrating the first elastic covering element covering the bone fragment. Figure 4 Used to explain Figure 3 An enlarged view of point A. (Combined with...) Figure 1-3 The cranial window bone slice 3 wearing device includes: a first elastic covering 1, such as Figure 1 , Figure 2 As shown, the first elastic covering 1 includes a covering portion 11 and an elastic contractile portion 12 surrounding the covering portion 11. The elastic contractile portion 12 can elastically contract, so that the covering portion 11 and the elastic contractile portion can form an accommodating space with an opening that can accommodate the bone piece 3. In actual use, the bone piece 3 is placed in the accommodating space through the opening. Because the elastic contractile portion 12 is elastic, the elastic contraction force of the elastic contractile portion 12 can tightly cover the bone piece 3 with the covering portion 11 and the elastic contractile portion 12. Furthermore, after bone pieces 3 of different shapes are placed in the accommodating space, the covering portion 11 can be deformed into a shape that fits the bone piece 3 under the action of elasticity. Specifically, the covering portion 11 is made of a flexible material, such as cotton fabric.
[0039] Combination Figure 3-4 Along the connection between the covering part 11 and the elastic contraction part 12, a buffer layer 14 is provided on the inner side of the covering part 11. Under the elastic force of the elastic contraction part 12, the buffer layer 14 is closely attached to the edge of the bone piece 3. Thus, after being worn on the patient's skull defect site, the edge of the bone piece 3 will not directly contact the patient's scalp, thereby reducing the patient's discomfort. In addition, the buffer layer 14 can also act as a buffer between the edge of the bone piece 3 and the patient's scalp to offset the force exerted by the edge of the bone piece 3 on the patient's scalp. Thus, during long-term wear, the pressure of the edge of the bone piece 3 on the patient's body surface can be reduced, thereby reducing the occurrence of pressure sores.
[0040] Combination Figure 4The elastic contraction portion 12 includes an elastic connecting layer 121, such as... Figure 4 As shown, the elastic connecting layer 121 has a connecting side and a closing side. The connecting side is the side connected to the covering part 11. The connecting side and the covering part 11 can be fixedly connected, for example, by suturing the two together. The closing side is the side away from the covering part 11. A sandwich layer is provided in the closing side, as shown in the figure. An annular elastic band 122 is provided in the sandwich layer. The annular elastic band 122 can provide elastic closing force to the closing side, so that the closing side is always in a closed state, that is, the opening of the receiving space is always in a closed state. In actual use, medical personnel can apply force to the closing side to open it, and then place the bone piece 3 in the receiving space. At this time, the closing side naturally closes under the action of the annular elastic band 122, so that the first elastic covering part 11 naturally forms a shape that fits the bone piece 3. Of course, as will be understood by those skilled in the art, the annular elastic band 122 can also be disposed on the outer side of the closing side, for example, by sewing the annular elastic band 122 to the closing side.
[0041] Figure 5 This is a schematic diagram illustrating the structure of the second elastic covering. Figure 6 This is a schematic diagram illustrating the structure after the second elastic covering is combined with the first elastic covering. Figure 5-6 The cranial window bone slice 3 wearing device also includes: a second elastic covering 2, such as Figure 5 As shown, the second covering includes a flexible contact portion 21 and a connecting portion 22 surrounding the flexible contact portion 21. The connecting portion 22 is elastically contractible, and its inner side can connect to the outer side of the covering portion 11. After connection, the flexible contact portion 21 covers the receiving space, thus completely covering the bone piece 3. In actual use, in conjunction with the first elastic covering 1, the bone piece 3 is first placed in the receiving space formed by the first elastic covering 1. Then, the connecting portion 22 is opened, and the second elastic covering 2 is fitted onto the outer surface of the first elastic covering portion 11. At this time, the connecting portion 22 connects to the outer side of the covering portion 11, and the flexible contact portion 21 covers the opening of the receiving space, thereby completely wrapping the bone piece 3. In this configuration, the position of the bone piece 3 within the receiving space can be stabilized, preventing the bone piece 3 from moving relative to the first elastic covering portion 11. The flexible contact portion 21 can also be made of cotton fabric.
[0042] Figure 7 Used to explain Figure 6 Schematic diagram of the structure in the BB direction. Figure 8This is a schematic diagram illustrating the structure after the flexible contact portion and the bone fragment are attached. To ensure air permeability at the site of the skull defect, the bone fragment 3 is typically porous. As will be understood by those skilled in the art, after the second elastic covering portion 11 covers the bone fragment 3, the flexible contact portion 21 will... Figure 7 As shown, it is in a flattened state. Therefore, in order to make the flexible contact layer adhere to the bone piece 3, medical personnel can use needle and thread to sew the flexible contact part 21 and the covering part 11 together after passing through the holes in the bone piece 3, so that the second elastic covering part 11 forms as shown. Figure 8 The shape shown.
[0043] Figure 9 This diagram illustrates the positional relationship between the first and second connecting members. To achieve the connection between the connecting part 22 and the covering part 11, as follows... Figure 9 As shown, a first connector 15 is provided on the outer side of the covering part 11, and a second connector 23 is provided on the inner side of the connecting part 22. The first connector 15 and the second connector 23 are detachably connected. In this configuration, the bone fragment 3 can be covered by the first elastic covering part 1 and the second elastic covering part 2 in sequence, so that the first elastic covering part 1 and the second elastic covering part 2 will not interfere with each other when they are elastically deformed. Thus, after the bone fragment 3 is covered, it still matches the shape of the patient's skull defect location.
[0044] Specifically, the first connector 15 can be a hook side of Velcro, and the second connector 23 can be a loop side of Velcro. In actual use, after the bone piece 3 is covered by the first elastic covering 1 and the second elastic covering 2 in sequence, the hook side of Velcro and the loop side of Velcro hook together, so that the first elastic covering 1 and the second elastic covering 2 form a connection relationship, thereby ensuring that the bone piece 3 is always in a stable space during the patient's wearing process.
[0045] Meanwhile, the width of the hook side of the hook and loop fastener is greater than the width of the loop side. This arrangement increases the adhesion points of the loop side on the hook side, allowing the first elastic covering 1 and the second elastic covering 2 to form a stable connection after covering the bone pieces 3 of different shapes. As will be understood by those skilled in the art, alternatively, the width of the loop side of the hook and loop fastener can also be greater than the width of the hook side.
[0046] Figure 10 This is a schematic diagram illustrating the structure of the flexible contact part. (Combined with...) Figure 10 The flexible contact portion 21 includes: a flexible base layer 211 and a flexible dressing 212, such as Figure 9-10As shown, the connecting part 22 is arranged around the flexible base layer 211, wherein the flexible base layer 211 also has a buffer side facing the receiving space, and the flexible dressing 212 is arranged on the buffer side. The arrangement of the flexible dressing 212 can increase the comfort of the patient when wearing the bone plate 3. At the same time, the flexible dressing 212 can also play a buffering role between the patient's scalp surface and the bone plate 3. For example, when the bone plate 3 is subjected to external pressure, the flexible dressing 212 will be compressed and deformed to absorb the external force, thereby protecting the patient's brain tissue.
[0047] Specifically, the flexible dressing 212 can be a foam dressing, which has a porous structure that can absorb sweat produced on the patient's skin, while also being soft and having good cushioning properties.
[0048] Specifically, the buffer layer 14 can be made of materials such as sponge or foam dressing.
[0049] Figure 11 This is a schematic diagram illustrating the structure of the outer side of the connecting part. (Combined with...) Figure 10-11 The outer side of the connecting part 22 is also provided with several third connectors. The third connectors are snaps, which can be used to attach wigs to improve the aesthetics of the patient when wearing the bone piece 3.
[0050] To keep the drawings concise, only the parts relevant to this application are shown schematically in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is labeled.
[0051] It should be understood that although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0052] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of this application and are not intended to limit the scope of protection of this application. All equivalent implementations or modifications made without departing from the spirit of the art of this application, such as combinations, divisions or repetitions of features, should be included within the scope of protection of this application.
Claims
1. A skull window bone fragment covering apparatus, characterized by, It comprises, The first elastic covering member comprises a covering part and an elastic contraction part surrounding the covering part, the elastic contraction part can be elastically contracted to form a containing space between the covering part and the elastic contraction part which can contain bone fragments; wherein, along the connecting position of the covering part and the elastic contraction part, a buffer layer is arranged on the inner side of the covering part, when the elastic contraction part is elastically contracted, the buffer layer can tightly adhere to the edge of the bone fragments.
2. The skull window bone segment covering instrument of claim 1, wherein It also comprises: The second elastic covering member comprises a flexible contact part and a connecting part surrounding the flexible contact part, wherein the connecting part can be elastically contracted, and the inner side of the connecting part can be connected to the outer side of the covering part, so that the flexible contact part covers the containing space after connection.
3. The skull window bone segment covering instrument of claim 2, wherein, The elastic contraction part comprises: An elastic connecting layer has opposite connecting side and contraction side, wherein the connecting side is connected to the covering part, the inside of the contraction side is provided with a sandwich layer, and A ring-shaped elastic belt is arranged in the sandwich layer, wherein the ring-shaped elastic belt can provide elastic contraction force for the contraction side, so that the contraction side is always in a contraction state.
4. The skull window bone segment covering instrument of claim 3, wherein, The outer side of the covering part is provided with a first connecting member; The inner side of the connecting part is provided with a second connecting member, wherein the first connecting member and the second connecting member are detachably connected.
5. The skull window bone segment covering instrument of claim 4, wherein, The first connecting member comprises a Velcro hook surface; The second connecting member comprises a Velcro loop surface, which is attached to the Velcro hook surface.
6. The skull window bone segment covering instrument of claim 5, wherein, The width of the Velcro hook surface is greater than the width of the Velcro loop surface.
7. The skull window bone segment covering instrument of claim 5, wherein The flexible contact part comprises: A flexible base layer and a flexible dressing, the connecting part is arranged around the flexible base layer, wherein the flexible base layer also has a buffer side facing the containing space, and the flexible dressing is arranged on the buffer side.
8. The cranial window bone fragment covering instrument of claim 6, wherein, The buffer layer comprises a sponge layer.
9. The cranial window bone fragment covering instrument of claim 7, wherein, The flexible dressing comprises a foam dressing.
10. The skull window bone segment covering instrument of claim 6, wherein, The outer side of the connecting part is also provided with a plurality of third connecting members.