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CN-121971203-A - Self-adaptive craniocerebral pressure and self-adjusting artificial skull

CN121971203ACN 121971203 ACN121971203 ACN 121971203ACN-121971203-A

Abstract

The invention provides an adaptive cranium pressure self-adjusting artificial skull, which comprises a plurality of artificial skull flaps and a fixing device, wherein the artificial skull flaps are made of materials compatible with organism tissues, the plurality of artificial skull flaps can be installed together to form an overlapped structure with a circular coverage area, the size of the overlapped area of the overlapped structure can be adjusted according to the change of cranium pressure, and the fixing device can fix the plurality of artificial skull flaps on the skull of the body. The artificial skull can be implanted immediately at the time of operation, the decompression effect is not affected after the artificial skull is implanted, the artificial skull has self-adaptive craniocerebral pressure, the craniocerebral space of an operation area is automatically adjusted, and meanwhile, the trauma and the risk of repairing the skull by secondary operation are avoided.

Inventors

  • FU JUNQI
  • DAI CHENGYING
  • Zeng Jialei
  • FAN XIAOYU

Assignees

  • 华尔达(北京)科技有限公司

Dates

Publication Date
20260505
Application Date
20260106

Claims (10)

  1. 1. An adaptive craniocerebral pressure, self-adjusting artificial skull comprising: A plurality of artificial skull flaps made of a material compatible with body tissue, the plurality of artificial skull flaps being mountable together to form an overlapping structure having a circular footprint; a fixation device capable of fixing the plurality of artificial skull flaps to the body skull.
  2. 2. The self-adjusting, self-adapting cranium of claim 1 wherein the contour of each of the plurality of artificial skull flaps is formed by a first arc, a second arc, and a third arc connected in sequence.
  3. 3. An adaptive craniocerebral pressure, self-regulating artificial skull according to claim 2, wherein the radius of said first arc is equal to the radius of the contour of said circular coverage area, the radius of said second arc and said third arc is smaller than the radius of the contour of said circular coverage area, and the radius of said second arc is smaller than the radius of said third arc.
  4. 4. An adaptive cranium pressure, self-adjusting artificial skull according to claim 3 wherein said second arc is connected to said third arc in an inverted "S" shape such that when said plurality of artificial skull flaps are installed, the second arc of each artificial skull flap coincides with the third arc of an adjacent artificial skull flap.
  5. 5. An adaptive craniocerebral pressure, self-regulating artificial skull according to any of claims 1-4, wherein said artificial skull flap is made of a flexible or elastic material.
  6. 6. An adaptive craniocerebral pressure, self-regulating artificial skull according to any of claims 1-4, wherein said artificial skull flap is made of nitinol or polyetheretherketone material.
  7. 7. An adaptive craniocerebral pressure, self-regulating artificial skull of claim 6, wherein the number of artificial skull flaps is 2-4.
  8. 8. An adaptive craniocerebral pressure, self-adjusting artificial skull according to any one of claims 1-4, wherein each of said plurality of artificial skull flaps comprises a collapsible segmented structure.
  9. 9. An adaptive craniocerebral pressure, self-regulating artificial skull according to any of claims 1-4, wherein said artificial skull flap is internally provided with holes in a grid or intermittently open pattern to promote granulation tissue growth.
  10. 10. An adaptive craniocerebral pressure, self-adjusting artificial skull according to any of claims 1-4, wherein said fixation means is a retractable spring or elastic band.

Description

Self-adaptive craniocerebral pressure and self-adjusting artificial skull Technical Field The invention relates to a self-adaptive craniocerebral pressure and self-adjusting artificial skull, belonging to the technical field of implantable medical devices. Background At present, after craniocerebral injury, craniocerebral hemorrhagic diseases and craniocerebral tumor operations, such as intra-operative intracranial pressure and cerebral bulging, the skull bone flap needs to be removed and pressure reduced. The skull repair operation treatment is carried out again after waiting for 3 months to half a year after the operation, and the artificial skull is implanted, and a titanium mesh or polyether-ether-ketone material is generally used. A total of2 surgeries were required. The bone flap decompression operation causes the skull defect of the patient and the partial scalp depression, which affects the intracranial environment change and appearance of the patient. Skull defects do not provide effective protection for brain tissue. The patient is again at the trauma and risk of operation, and part of the patient even has nerve dysfunction or death due to complication of the craniotomy repair. Thus, there is a need in the art for an artificial skull that is capable of repairing the missing skull of a patient immediately after decompression of the bone flap, and that is capable of adapting to changes in craniocerebral volume and craniocerebral pressure. Disclosure of Invention The invention aims to provide an artificial skull which is used for patients with craniocerebral injury, craniocerebral hemorrhagic diseases and craniocerebral tumor operation and needs bone flap removal and decompression, can be used for immediate implantation of bone flap after decompression, can automatically adjust craniocerebral volume, has the capacity of self-adapting craniocerebral pressure, does not need secondary operation, and reduces trauma and risk of the patients. The technical scheme of the invention is as follows. An adaptive craniocerebral pressure, self-adjusting artificial skull comprising: A plurality of artificial skull flaps made of a material compatible with body tissue, the plurality of artificial skull flaps being mountable together to form an overlapping structure having a circular footprint; a fixation device capable of fixing the plurality of artificial skull flaps to the body skull. Preferably, the contour of each of the plurality of artificial skull flaps is formed by sequentially connecting a first circular arc, a second circular arc and a third circular arc. Preferably, the radius of the first arc is equal to the radius of the contour of the circular coverage area, the radius of the second arc and the third arc is smaller than the radius of the contour of the circular coverage area, and the radius of the second arc is smaller than the radius of the third arc. Preferably, the second arc is connected to the third arc in an inverted "S" shape such that when the plurality of artificial skull flaps are installed, the second arc of each artificial skull flap coincides with the third arc of an adjacent artificial skull flap. Preferably, the artificial skull flap is made of a flexible material or an elastic material. Preferably, the artificial skull flap is made of nitinol or polyetheretherketone material. Preferably, the number of the plurality of artificial skull flaps is 2-4. Preferably, each of the plurality of artificial skull flaps comprises a collapsible segmented structure. Preferably, the artificial skull flap is internally provided with holes in a grid or intermittently open so as to promote the growth of granulation tissue. Preferably, the fixing means is a retractable spring or elastic band. Through the technical scheme, the invention can obtain the following beneficial technical effects. The self-adaptive craniocerebral pressure self-regulating artificial skull can be implanted immediately at the time of operation when craniocerebral injury, craniocerebral hemorrhagic disease and craniocerebral tumor need to remove bone flap and decompress, does not influence the decompression effect after being implanted into the artificial skull, has self-adaptive craniocerebral pressure, automatically adjusts craniocerebral space of an operation area, and simultaneously avoids the trauma and risk of repairing the skull by secondary operation. Compared with the prior art, the method solves the two problems of bone flap removal decompression and skull repair at the same time. Drawings FIG. 1 is a schematic illustration of the structure of an adaptive craniocerebral pressure, self-adjusting artificial skull of the present invention; FIG. 2 is a schematic view of an artificial skull flap of FIG. 1 having a collapsible structure; FIG. 3 is a schematic view of an artificial skull flap of FIG. 1 having an internal mesh open cell structure. Detailed Description In order to more clearly illustrate the embodiments of the inventi