CN112057211A - 一种可吸收椎间融合器 - Google Patents

一种可吸收椎间融合器 Download PDF

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Publication number
CN112057211A
CN112057211A CN202011115742.0A CN202011115742A CN112057211A CN 112057211 A CN112057211 A CN 112057211A CN 202011115742 A CN202011115742 A CN 202011115742A CN 112057211 A CN112057211 A CN 112057211A
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China
Prior art keywords
absorbable
inner core
fusion cage
interbody fusion
surface layer
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CN202011115742.0A
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English (en)
Inventor
孙硕
孙德修
孙垂国
徐兆万
魏文庆
宋健
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Shandong Hangwei Orthopedics Medical Instrument Co Ltd
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Shandong Hangwei Orthopedics Medical Instrument Co Ltd
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Priority to CN202011115742.0A priority Critical patent/CN112057211A/zh
Publication of CN112057211A publication Critical patent/CN112057211A/zh
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • A61F2/447—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)

Abstract

本发明提供了一种可吸收椎间融合器，由内芯和表层组成，所述表层与内芯表面紧密结合，所述表层完全包裹内芯，所述内芯采用机械强度较高的可吸收材料，如：人体内可吸收的镁合金材料，所述表层采用另一种保持固态的可吸收材料，如：聚乳酸材料，所述一种可吸收椎间融合器外形为筒形，侧壁开孔，其上下表面均设有凸刺或锯齿。

Description

一种可吸收椎间融合器
技术领域
本发明提供了一种医疗器械，尤其是一种可吸收椎间融合器。
背景技术
椎间融合技术是脊柱外科主要的手术方式之一，利用椎间融合器植入椎间隙将病损椎间隙撑开、压缩及稳定，即可解除病变所带来的脊椎不稳、疼痛等问题。其一般成型为圆筒状。医生在给病人行椎间融合术时，一般则是在病人身体其他地方切割一小块骨骼作为骨诱导材料，并将其固放于相应圆筒状结构的椎间融合器内，以使相临两椎体生长骨骼连接为一体。如此，即实现病人两椎体之间在术后融合而形成一整体。目前，常用的材料有PEEK(聚醚醚酮)或钛，这两种材料不被人体吸收，因此，术后需要留在体内，阻挡了大部分椎体的融合，降低了连接强度。
近年来可吸收椎间融合器逐步用于临床，克服了上述缺陷，如中国专利公开号CN1436518A公布了由聚乳酸材质而制作的可吸收融合器研制过程，但其强度有待提高。
发明内容
本发明提供了一种可吸收椎间融合器，克服了上述缺陷。
所述一种可吸收椎间融合器，由内芯和表层组成，所述表层与内芯表面紧密结合，所述表层完全包裹内芯，所述内芯采用机械强度较高的可吸收材料，如：人体内可吸收的镁合金材料，所述表层采用另一种保持固态的可吸收材料，如：聚乳酸材料，所述一种可吸收椎间融合器外形为筒形，侧壁开孔，其上下表面均设有凸刺或锯齿。
有益效果：所述人体内可吸收的镁合金材料，固态机械强度较高，但其固态时间较短，与体液接触后易分解被吸收，不符合椎体生长周期要求，所述聚乳酸材料与体液接触后固态时间也较短，且其机械强度较低，本发明所述一种可吸收椎间融合器，其结构设计利用两种材料叠加，制造出来的可吸收椎间融合器，机械强度满足椎体强度的要求且延长了保持机械强度的时间，克服了上述缺陷。
附图说明
图1是本发明一种可吸收椎间融合器的结构示意图。
具体实施方式
下面结合附图给出的实施例进一步说明本发明。
图1为本发明提供了一种可吸收椎间融合器，由内芯1和表层2组成，所述表层2与内芯1表面紧密结合，所述表层2完全包裹内芯1，所述内芯1采用机械强度较高的可吸收材料，如：人体内可吸收的镁合金材料，所述表层2采用另一种保持固态的可吸收材料，如：聚乳酸材料，所述一种可吸收椎间融合器外形为筒形，侧壁开孔，其上下表面均设有凸刺或锯齿。

Claims (3)

1.一种可吸收椎间融合器，其特征在于由内芯和表层组成，所述表层与内芯表面紧密结合，所述表层完全包裹内芯。
2.根据权利要求1所述的一种可吸收椎间融合器，其特征在于所述内芯采用机械强度较高的可吸收材料，所述表层采用另一种保持固态的可吸收材料。
3.根据权利要求2所述的一种可吸收椎间融合器，其特征在于所述内芯采用人体内可吸收的镁合金材料，所述表层采用聚乳酸材料。
CN202011115742.0A 2020-10-19 2020-10-19 一种可吸收椎间融合器 Withdrawn CN112057211A (zh)

Priority Applications (1)

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CN202011115742.0A CN112057211A (zh) 2020-10-19 2020-10-19 一种可吸收椎间融合器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011115742.0A CN112057211A (zh) 2020-10-19 2020-10-19 一种可吸收椎间融合器

Publications (1)

Publication Number Publication Date
CN112057211A true CN112057211A (zh) 2020-12-11

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Country Status (1)

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CN (1) CN112057211A (zh)

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Application publication date: 20201211