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    Ni-Ti-Nb alloy processing method and articles formed from the alloy
    3.
    发明授权
    Ni-Ti-Nb alloy processing method and articles formed from the alloy 失效
    Ni-Ti-Nb合金加工方法和由合金制成的制品

    公开(公告)号：US06428634B1

    公开(公告)日：2002-08-06

    申请号：US08839965

    申请日：1997-04-24

    Applicant: Petrus A. Besselink ,  Rohit C. L. Sachdeva

    Inventor： Petrus A. Besselink ,  Rohit C. L. Sachdeva

    IPC: C22C1400

    CPC classification number: C22F1/10 ,  A61C5/42 ,  A61L31/022 ,  A61L31/14 ,  A61L2400/16 ,  C22C19/03 ,  C22F1/006 ,  Y10S420/902

    Abstract: A method of processing a Ni—Ti—Nb based alloy which contains from about 4 to about 14 atomic percent Nb and in which the ratio of atomic percent Ni to atomic percent Ti is from about 3.8 to 1.2, comprising working the alloy sufficient to impart a textured structure to the alloy, at a temperature below the recrystallisation temperature of the alloy. Preferably, the alloy is worked at least 10%, by a technique such as rolling or drawing, or another technique which produces a similar crystal structure. The alloy has increased stiffness compared with Ni—Ti binary alloys with superelastic properties.

    Abstract translation: 一种处理Ni-Ti-Nb基合金的方法，其包含约4至约14原子％的Nb，其中Ni与原子％Ti的原子百分比为约3.8至1.2，包括使合金充分施加 在低于合金的再结晶温度的温度下，合金的纹理结构。 优选地，通过诸如轧制或拉制的技术或产生类似晶体结构的另一技术将合金加工至少10％。 与具有超弹性特性的Ni-Ti二元合金相比，该合金具有增加的刚度。

    Instrument for endoscopic-type procedures
    9.
    发明授权
    Instrument for endoscopic-type procedures 失效
    内镜式手术仪器

    公开(公告)号：US5607435A

    公开(公告)日：1997-03-04

    申请号：US247779

    申请日：1994-05-23

    Applicant: Rohit C. L. Sachdeva ,  Petrus A. Besselink

    Inventor： Rohit C. L. Sachdeva ,  Petrus A. Besselink

    IPC: A61C19/04 ,  A61B1/00 ,  A61B1/005 ,  A61B17/00 ,  A61B17/04

    CPC classification number: A61B1/0058

    Abstract: The present invention is an instrument (10) which includes a tubular section (12) having a wall (13) made of a material exhibiting superelastic characteristics and a delivery tube (14) having a bore (15) through which the tubular section (12) passes. The instrument (10) may be adapted for use in medical/dental and non-medical procedures. The superelastic character of the wall material is used in combination with the delivery tube (14) to alternately restrict the shape of the wall (13) and allow it to change to its unconstrained shape. Thus, the wall (13) can be sufficiently deformed to permit the tubular section (12) to pass in and out of and through the delivery tube (14) while at the same time enabling the tubular section (12) to have a shape when extended outside of the delivery tube (14) that is sufficiently bent or curved to be suitable for performing a desired function, for example a medical or dental procedure inside a patient's body. In this way, the delivery tube (14) enables the tubular section (12) to reach the site of the procedure through more narrow insertion paths, and in the case of medical/dental applications, with less trauma to the surrounding tissue along the insertion path. Because it can be inserted through more narrow pathways, the tubular section (12) can be delivered to more remote and harder to reach locations.

    Abstract translation: 本发明是一种仪器（10），其包括具有由表现出超弹性特征的材料制成的壁（13）的管状部分（12）和具有孔（15）的输送管（14），管状部分 ）通过。 仪器（10）可适用于医疗/牙科和非医疗程序。 壁材料的超弹性特征与输送管（14）组合使用以交替地限制壁（13）的形状并允许其变为其无约束形状。 因此，壁（13）可以被充分地变形，以允许管状部分（12）通过并穿过输送管（14），同时使管状部分（12）具有形状，当 延伸到足够弯曲或弯曲的输送管（14）的外部，以适合于执行所需功能，例如患者体内的医疗或牙科手术。 以这种方式，输送管（14）使得管状部分（12）能够通过更窄的插入路径到达手术部位，并且在医疗/牙科应用的情况下，沿着插入物对周围组织的创伤较小 路径。 因为它可以通过更窄的通道插入，所以管状部分（12）可被输送到更远的位置并且更难以到达位置。

    Prosthesis with shape memory locking element
    10.
    发明授权
    Prosthesis with shape memory locking element 失效
    假体与形状记忆锁定元件

    公开(公告)号：US5507826A

    公开(公告)日：1996-04-16

    申请号：US225849

    申请日：1994-04-11

    Applicant: Petrus A. Besselink ,  Rohit C. L. Sachdeva

    Inventor： Petrus A. Besselink ,  Rohit C. L. Sachdeva

    IPC: A61C7/00 ,  A61B17/00 ,  A61B17/60 ,  A61B17/70 ,  A61C7/06 ,  A61F2/00 ,  A61M5/46 ,  A61F2/34

    CPC classification number: A61B17/7016 ,  A61B17/7001 ,  A61B17/7014 ,  A61B17/7025 ,  A61B17/7047 ,  A61B17/7052 ,  A61C7/06 ,  A61B2017/00867 ,  A61C2201/007 ,  A61F2002/30093 ,  A61F2002/30102 ,  A61F2210/0019 ,  A61F2210/0042 ,  A61M5/46

    Abstract: The present invention is a prosthesis (10) for replacing a body part which includes a first element (16) adapted to receive at least a portion of a second element (18) in an operative manner. The present prosthesis (10) also includes a variable locking ring (20) made of a shape memory material having a transformation temperature range ("TTR"). The locking ring (20) is used to allow insertion of the second element (18) into the first (16) at least at temperatures below the TTR and to lock the elements (16, 18) together at least at temperatures above the TTR. With it at a temperature below its TTR, the locking ring (20) is positioned between the two elements (16, 18). With it so positioned, the locking ring (20) is adapted to interlock the elements (16, 18) together at temperatures above its TTR by at least attempting to change its shape.

    Abstract translation: 本发明是一种用于更换主体部分的假体（10），其包括适于以可操作的方式接纳第二元件（18）的至少一部分的第一元件（16）。 本假体（10）还包括由具有相变温度范围（“TTR”）的形状记忆材料制成的可变锁定环（20）。 锁定环（20）用于允许至少在低于TTR的温度下将第二元件（18）插入第一元件（16），并且将元件（16,18）至少在高于TTR的温度下锁定在一起。 在低于其TTR的温度下，锁定环（20）位于两个元件（16,18）之间。 通过这样定位，锁定环（20）适于在高于其TTR的温度下将元件（16,18）互锁在一起，至少试图改变其形状。

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