Vol.28 No.12 岳献芳等：颅内压变化引起的颅骨表面应变分析 .1151. [19]丁祖荣，宋冬雷，李士其，等。硬脑膜及其替代物的蠕变特 [22]张形，刘洪臣，王延荣，等.上领骨复合体三维有限元模 性.上海交通大学学报，1998,32(8)：93 型的建立，中华口腔医学杂志，2002,35(5)：374 [20]Cook S D.Weinstein A M.Klawitter J J.Parameters affect- [23]朱兴华，郭学东，董心.豚鼠肱骨中央截面应变在体测量 ing the stress distribution around the LTI carbon and alu- 及影响因素分析.吉林工业大学学报，1994,24(4)：34 minum oxide dental implant.J Biomed Master Res,1982. [24]McElhaney J H.Fogle J.Meluin J.Mechanical properties of 16:875 eranial bone.J Biomech.1970.3:495 [21]Carter D R.Hayes W C.The compressive behavior of bone [25]Wood J L.Dynamic response of human cranial bone.J as a two phase porous structure.J Bone Joint Surg.1977. Biomech.1971.4:1 59A:954 Strain analysis on the superficial surface of skull as intracranial pressure chang ing Y UE Xianfang,WANG Li,ZHOU Feng Mechanical Engineering School.University of Science and Technology Beijing.Beijing 100083.China ABSTRACT The average intracranial pressure (ICP)of parietal position for adults is normally about 3.62 kPa.The brain appears to be mild injury as the ICP variation is about 2.5kPa,moderate injury as the ICP variation is about 3.5kPa,and severe injury as the ICP variation is about or more than 5kPa.This paper analyzed the stress and strain on the exterior surface of human skull and the composite structure composed by skull and duramater with the finite-element software MSC-PATRAN/NASTRAN.The experiments were carried out on the strains of porcine skull slices,porcine and human coronal skulls to simulate the actu- al situation in the human craniocerebra.The results show that the strains of mild injury,moderate injury and severe injury are 1.5X10-6,2.5X105 and 4.0X10 respectively.It indicates that the strains on the exterior surface of skull are measurable and all within the range of instrument test.The minitraumatic method to measure ICP is feasible by pasting strain foils on the exterior surface of skull,by which ICP vari- ation can be obtained through the corresponding operation to the strain of skull.Compared with the clinical methods of punching in the skull or puncturing in the spine cord,the strain -electrometric method is safe, simple,minit raumatic,accurate and feasible. KEY WORDS skull;intracranial pressure:strain;strain-electrometric method;finite element method［19］ 丁祖荣‚宋冬雷‚李士其‚等．硬脑膜及其替代物的蠕变特 性．上海交通大学学报‚1998‚32（8）：93 ［20］ Cook S D‚Weinstein A M‚Klawitter J J．Parameters affect￾ing the stress distribution around the LTI carbon and alu￾minum oxide dental implant．J Biomed Master Res‚1982‚ 16：875 ［21］ Carter D R‚Hayes W C．The compressive behavior of bone as a two-phase porous structure．J Bone Joint Surg‚1977‚ 59A：954 ［22］ 张彤‚刘洪臣‚王延荣‚等．上颌骨复合体三维有限元模 型的建立．中华口腔医学杂志‚2002‚35（5）：374 ［23］ 朱兴华‚郭学东‚董心．豚鼠肱骨中央截面应变在体测量 及影响因素分析．吉林工业大学学报‚1994‚24（4）：34 ［24］ McElhaney J H‚Fogle J‚Meluin J．Mechanical properties of cranial bone．J Biomech‚1970‚3：495 ［25］ Wood J L．Dynamic response of human cranial bone．J Biomech‚1971‚4：1 Strain analysis on the superficial surface of skull as intracranial pressure chang￾ing Y UE Xianf ang‚WA NG L i‚ZHOU Feng Mechanical Engineering School‚University of Science and Technology Beijing‚Beijing100083‚China ABSTRACT The average intracranial pressure （ICP） of parietal position for adults is normally about3∙62 kPa．The brain appears to be mild injury as the ICP variation is about2∙5kPa‚moderate injury as the ICP variation is about 3∙5kPa‚and severe injury as the ICP variation is about or more than5kPa．This paper analyzed the stress and strain on the exterior surface of human skull and the composite structure composed by skull and duramater with the finite-element software MSC－PATRAN／NASTRAN．The experiments were carried out on the strains of porcine skull slices‚porcine and human coronal skulls to simulate the actu￾al situation in the human craniocerebra．The results show that the strains of mild injury‚moderate injury and severe injury are1∙5×10－6‚2∙5×10－6 and4∙0×10－6 respectively．It indicates that the strains on the exterior surface of skull are measurable and all within the range of instrument test．The minitraumatic method to measure ICP is feasible by pasting strain foils on the exterior surface of skull‚by which ICP vari￾ation can be obtained through the corresponding operation to the strain of skull．Compared with the clinical methods of punching in the skull or puncturing in the spine cord‚the strain-electrometric method is safe‚ simple‚minitraumatic‚accurate and feasible． KEY WORDS skull；intracranial pressure；strain；strain-electrometric method；finite element method Vol．28No．12 岳献芳等： 颅内压变化引起的颅骨表面应变分析 ·1151·