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    • 5. 发明申请
    • SPINAL ANULUS CUTTER
    • 脊柱螺旋切割机
    • WO1996011639A1
    • 1996-04-25
    • PCT/US1995013269
    • 1995-10-17
    • RAYMEDICA, INC.
    • RAYMEDICA, INC.RAY, Charles, D.DICKHUDT, Eugene, A.
    • A61B17/32
    • A61B17/320016A61B17/1604A61B17/1671A61B17/32053A61B2017/00261
    • A spinal anulus cutter for cutting (10) a multisided flap (64) in an encapsulating ligament, such as an anulus (58) of a human intervertebral disc, to provide access to an interior space or material surrounded by the ligament. The spinal anulus cutter (10) is characterized by a knife blade (14) comprised of a plurality of walls which are connected together to define a closed side (36) and an open side (40). Further, a cutting edge (24) is formed at the forward edge of the walls (34) which is configured to cut the multisided flap (64) in the ligament when an axial force is transmitted to the knife blade (14) in a direction towards the cutting edge (24). The flap will conform in shape and size to the form of the knife blade (14), whereby the open side of the knife blade (14) will not cut the ligamentary tissue.
    • 一种用于在诸如人椎间盘的环(58)的包封韧带中切割(10)多瓣瓣(64)的脊椎环切刀,以提供对由所述韧带包围的内部空间或材料的通路。 脊椎环切刀(10)的特征在于包括多个壁的刀片(14),所述多个壁连接在一起以限定封闭侧(36)和开口侧(40)。 此外,在壁(34)的前边缘处形成切削刃(24),该切削刃被构造成当轴向力沿轴向方向(14)传递到刀片(14)时,在该韧带中切割多边翼片(64) 朝向切削刃(24)。 翼片的形状和尺寸将符合刀片(14)的形状,由此刀片(14)的开口侧不会切割韧带组织。
    • 6. 发明申请
    • PROSTHETIC SPINAL DISC NUCLEUS WITH ELEVATED SWELLING RATE
    • 假性脊柱盘核具有升高的膨胀率
    • WO2004047690A2
    • 2004-06-10
    • PCT/US2003/037870
    • 2003-11-25
    • RAYMEDICA, INC.SHERMAN, Tara, NicoleNORTON, Britt, KeenanBAIN, Allison, C.
    • SHERMAN, Tara, NicoleNORTON, Britt, KeenanBAIN, Allison, C.
    • A61F2/44
    • A61L27/52A61F2/3094A61F2/441A61F2002/444A61F2002/4495A61L2430/38
    • A method of manufacturing a prosthetic spinal disc nucleus. The including forming a hydrogel core from a hydrogel material in a natural state. The hydrogel material in the natural state is characterized by a natural swelling rate. The hydrogel is treated in an alkaline solution having a pH of at least about 8. This treatment transitions the hydrogel core from the natural state to a treated state characterized by an elevated swelling rate. The elevated swelling rate is greater that the natural swelling rate. The resultant, treated hydrogel core forms at least a portion of a prosthetic spinal disc nucleus that is otherwise sized for insertion into a spinal disc nucleus cavity. In one particular embodiment, the hydrogel core is inserted into a constraining jacket. Another aspect of the present invention relates to a prosthetic spinal disc nucleus including a hydrogel core having the elevated swelling rate.
    • 制造假体脊椎椎间盘髓核的方法

      包括由天然状态下的水凝胶材料形成水凝胶芯。 天然状态下的水凝胶材料的特征在于自然膨胀率。 该水凝胶在具有至少约8的pH的碱性溶液中处理。该处理将水凝胶芯从天然状态转变为特征在于升高的溶胀速率的处理状态。 升高的肿胀率大于自然肿胀率。 所得到的经处理的水凝胶芯形成至少一部分的假体脊椎盘核,所述脊椎盘髓核的尺寸被设定为插入脊椎盘髓核腔中。 在一个特定实施例中,水凝胶芯被插入约束护套中。 本发明的另一方面涉及包括具有升高的溶胀率的水凝胶芯的假体脊椎盘核。