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    • 2. 发明授权
    • Process and apparatus for tibial plateau compenent
    • 用于胫骨平台的方法和装置
    • US4822362A
    • 1989-04-18
    • US52033
    • 1987-05-19
    • Peter S. WalkerFrederick C. Ewald
    • Peter S. WalkerFrederick C. Ewald
    • A61F2/00A61F2/30A61F2/38A61F5/04F24C15/20
    • A61F2/389A61F2002/305A61F2002/30884A61F2220/0025
    • A prosthesis and a surgical procedure (process) therefore are provided having a relatively thin plate fitted to a resected portion of the tibial plateau with the plate fitting uniformly around a major portion of the calcareous bone of the cortical wall. A pin on the under side of the plate aligned substantially with the axis of the intramedullary canal of the tibia fixes the plate against transverse relative motion between the plate and plateau, and blades or keels also on the under side of the plate are aligned maximum density (strength) of the cancellous bone of the plateau and fix the plate against rotation relative to the plateau. The surgical procedure of the invention employs a template to assure approximate positioning, and exact interrelationship between the plate and the fixing means.
    • 因此,提供了一种假体和外科手术(手术),其具有安装到胫骨平台的切除部分上的相对较薄的板,其中所述板均匀地围绕皮质壁的钙质骨的主要部分。 基本上与胫骨髓内管的轴线对准的板的下侧的针固定板抵抗板和平台之间的横向相对运动,并且也在板的下侧上的叶片或龙骨对齐最大密度 (强度),并使板抵抗相对于平台的旋转而固定。 本发明的外科手术采用模板来确保大致定位,以及板和固定装置之间的精确相互关系。
    • 3. 发明授权
    • Method of design of human joint prosthesis
    • 人体关节假体设计方法
    • US4822365A
    • 1989-04-18
    • US097286
    • 1987-09-11
    • Peter S. WalkerFrederick C. Ewald
    • Peter S. WalkerFrederick C. Ewald
    • A61F2/00A61F2/30A61F2/38G05B19/4099B23Q15/14
    • G05B19/4099A61F2/30942A61F2/38A61F2/3886A61F2002/30952A61F2310/00017A61F2310/00023A61F2310/00029G05B2219/35012G05B2219/45172G05B2219/49008Y10S623/914
    • A method of designing a prosthesis having convex male and concave female mating portions is provided for a human joint comprising a condylar male portion the surface of which is generated by the piecewise analysis of an anatomical condyle, which can be an average condyle or a selected condyle, or a distortion of an average condyle to fit the observed general dimensions of a specific patient, and the female portion having at least flexion and laxity surfaces, the flexion surfaces of which are generated by plotting the path of articulation of substantial points of contact between said male portion and a corresponding anatomical female component for said joint through the full normal extension-flexion range plus normal rotation and posterior-anterior displacement for that joint, and the laxity surfaces of said female member comprising raised guide-bearing surfaces for resisting dislocation of the condylar portion, the height and angle, and therefore, the resistance to dislocation, of which guide bearing surfaces increases as a function of deviation from the central motion path of said male portion and as a function of the flexion angle, and which at full laxity for any given angle of flexion corresponds substantially to the forces of anatomical ligamentous restraint of said anatomical joint at the limits of laxity.
    • 提供了一种设计具有凸形阳凹配合部分的假体的方法,其包括髁突部分,所述髁突部分的表面通过解剖髁的分段分析产生,所述髁突部分可以是平均髁或选择的髁 ,或平均髁的变形以适应特定患者的观察到的一般尺寸,并且具有至少屈曲和松弛表面的雌性部分,其弯曲表面是通过绘制关节之间的实质接触点的路径而产生的 所述阳部分和用于所述关节的相应的解剖学阴部分通过完全正常的伸展屈曲范围加上该关节的正常旋转和后前移位,并且所述阴部件的松弛表面包括用于抵抗脱位的凸起的导向支承表面 髁突部分,高度和角度,因此,抵抗脱位 h导向轴承表面作为与所述阳部分的中心运动路径的偏离和作为屈曲角的函数的函数而增加,并且对于任何给定的屈曲角度而言,在完全松弛时,h导向轴承表面基本上对应于所述 解剖关节在松弛的极限。
    • 6. 发明授权
    • Method of designing and manufacturing a human joint prosthesis
    • 设计和制造人体关节假体的方法
    • US4936862A
    • 1990-06-26
    • US188477
    • 1988-04-29
    • Peter S. WalkerFrederick C. Ewald
    • Peter S. WalkerFrederick C. Ewald
    • A61F2/30A61F2/36A61F2/46G05B19/42
    • G05B19/4207A61F2/30942A61F2/36A61F2/3662A61F2002/30948A61F2002/30952A61F2002/4631G05B2219/45168Y10S623/901Y10S623/914
    • A customized human joint prosthesis replicating the primary contours and dimensions of a patient's bone is designed and manufactured utilizing an average anatomical bone shape. The average anatomical bone shape is generated by digitizing and storing in a computer memory the average three dimensional shape of a significant number of actual bone portions corresponding to the bone portion to be replaced by the prosthesis. Thereafter, the scale of the patient's bone is determined by measuring the outside dimensions of the patient's bone in at least one plane parallel to the longitudinal axis of that bone. The average anatomical shape then is adjusted to form a first synthesized shape which conforms to that scale. Subsequently, the actual shape of the bone of the patient is measured along a plurality of longitudinally spaced lines in at least one plane normal to the longitudinal axis of the patient's bone. The first synthesized shape is then adjusted to form a second synthesized shape conforming to the measured shape of the patient's bone. The second synthesized shape is manufactured by CAD/CAM or other suitable means.
    • 使用平均解剖骨形状设计和制造复制患者骨骼的主要轮廓和尺寸的定制人体关节假体。 平均解剖骨形状是通过在计算机存储器中数字化并存储相当于由假体代替的骨部分的大量实际骨部分的平均三维形状而产生的。 此后,通过在平行于该骨的纵向轴线的至少一个平面中测量患者骨骼的外部尺寸来确定患者骨骼的尺度。 然后调整平均解剖形状以形成符合该标尺的第一合成形状。 随后,沿着与患者骨骼的纵向轴线垂直的至少一个平面中的多个纵向间隔的线测量患者的骨的实际形状。 然后调整第一合成形状以形成符合患者骨骼的测量形状的第二合成形状。 第二合成形状通过CAD / CAM或其他合适的方式制造。