利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

13 条记录 (耗时 0.028 秒)

    Method for loading shape memory polymer gripper mechanisms
    1.
    发明授权
    Method for loading shape memory polymer gripper mechanisms 有权

    公开(公告)号：US06370757B1

    公开(公告)日：2002-04-16

    申请号：US09568615

    申请日：2000-05-10

    申请人： Abraham P. Lee ,  William J. Benett ,  Daniel L. Schumann ,  Peter A. Krulevitch ,  Joseph P. Fitch

    发明人： Abraham P. Lee ,  William J. Benett ,  Daniel L. Schumann ,  Peter A. Krulevitch ,  Joseph P. Fitch

    IPC分类号： B23P1102

    摘要： A method and apparatus for loading deposit material, such as an embolic coil, into a shape memory polymer (SMP) gripping/release mechanism. The apparatus enables the application of uniform pressure to secure a grip by the SMP mechanism on the deposit material via differential pressure between, for example, vacuum within the SMP mechanism and hydrostatic water pressure on the exterior of the SMP mechanism. The SMP tubing material of the mechanism is heated to above the glass transformation temperature (Tg) while reshaping, and subsequently cooled to below Tg to freeze the shape. The heating and/or cooling may, for example, be provided by the same water applied for pressurization or the heating can be applied by optical fibers packaged to the SMP mechanism for directing a laser beam, for example, thereunto. At a point of use, the deposit material is released from the SMP mechanism by reheating the SMP material to above the temperature Tg whereby it returns to its initial shape. The reheating of the SMP material may be carried out by injecting heated fluid (water) through an associated catheter or by optical fibers and an associated beam of laser light, for example.

    Microfabricated therapeutic actuators and release mechanisms therefor
    2.
    发明授权
    Microfabricated therapeutic actuators and release mechanisms therefor 失效
    微型治疗执行器及其释放机制

    公开(公告)号：US6059815A

    公开(公告)日：2000-05-09

    申请号：US67824

    申请日：1998-04-28

    申请人： Abraham P. Lee ,  Joseph P. Fitch ,  Daniel L. Schumann ,  Luiz Da Silva ,  William J. Benett ,  Peter A. Krulevitch

    发明人： Abraham P. Lee ,  Joseph P. Fitch ,  Daniel L. Schumann ,  Luiz Da Silva ,  William J. Benett ,  Peter A. Krulevitch

    IPC分类号： A61B17/00 ,  A61B17/12 ,  A61M25/16 ,  A61B17/28

    CPC分类号： A61B17/1214 ,  A61B17/12022 ,  A61B2017/00867 ,  A61B2017/00871 ,  A61B2017/12068 ,  A61B2017/12077

    摘要： Microfabricated therapeutic actuators are fabricated using a shape memory polymer (SMP), a polyurethane-based material that undergoes a phase transformation at a specified temperature (Tg). At a temperature above temperature Tg material is soft and can be easily reshaped into another configuration. As the temperature is lowered below temperature Tg the new shape is fixed and locked in as long as the material stays below temperature Tg. Upon reheating the material to a temperature above Tg, the material will return to its original shape. By the use of such SMP material, SMP microtubing can be used as a retaining/release actuator for the delivery of material, such as embolic coils, for example, through catheters into aneurysms, for example. The microtubing can be manufactured in various sizes and the phase change temperature Tg is determinate for an intended temperature target and intended use. The SMP microtubing can be positioned around or within an end of a deposit material. Various heating arrangements can be utilized with the SMP release mechanism, and the SMP microtubing can include a metallic coating for enhanced light absorption.

    摘要翻译： 使用形状记忆聚合物（SMP），在特定温度（Tg）下经历相变的基于聚氨酯的材料制造微制剂治疗致动器。 在高于温度的温度下，Tg材料是柔软的并且可以容易地重塑成另一种构型。 当温度降低到温度Tg以下时，只要材料保持低于温度Tg，新形状就会被固定和锁定。 将材料重新加热至高于Tg的温度时，材料将恢复到原来的形状。 通过使用这种SMP材料，SMP微管可用作用于例如通过导管穿入动脉瘤等物质输送的保持/释放致动器。 微管可以以各种尺寸制造，相变温度Tg对于预期的温度目标和预期用途是确定的。 SMP微管可以定位在沉积材料的周围或内部。 SMP释放机构可以使用各种加热装置，并且SMP微管可以包括用于增强光吸收的金属涂层。

    Apparatus for loading shape memory gripper mechanisms
    3.
    发明授权
    Apparatus for loading shape memory gripper mechanisms 失效
    装载形状记忆夹持机构的装置

    公开(公告)号：US06240630B1

    公开(公告)日：2001-06-05

    申请号：US08984624

    申请日：1997-12-03

    申请人： Abraham P. Lee ,  William J. Benett ,  Daniel L. Schumann ,  Peter A. Krulevitch ,  Joseph P. Fitch

    发明人： Abraham P. Lee ,  William J. Benett ,  Daniel L. Schumann ,  Peter A. Krulevitch ,  Joseph P. Fitch

    IPC分类号： B21D3904

    CPC分类号： A61B17/221 ,  A61B17/1219 ,  A61B2017/00345 ,  A61B2017/00867 ,  A61B2017/00871 ,  A61B2017/1205 ,  A61B2017/12068 ,  A61B2017/12072 ,  Y10T29/49865 ,  Y10T29/49929 ,  Y10T29/53439 ,  Y10T29/53987

    摘要： A method and apparatus for loading deposit material, such as an embolic coil, into a shape memory polymer (SMP) gripping/release mechanism. The apparatus enables the application of uniform pressure to secure a grip by the SMP mechanism on the deposit material via differential pressure between, for example, vacuum within the SMP mechanism and hydrostatic water pressure on the exterior of the SMP mechanism. The SMP tubing material of the mechanism is heated to above the glass transformation temperature (Tg) while reshaping, and subsequently cooled to below Tg to freeze the shape. The heating and/or cooling may, for example, be provided by the same water applied for pressurization or the heating can be applied by optical fibers packaged to the SMP mechanism for directing a laser beam, for example, thereunto. At a point of use, the deposit material is released from the SMP mechanism by reheating the SMP material to above the temperature Tg whereby it returns to its initial shape. The reheating of the SM material may be carried out by injecting heated fluid (water) through an associated catheter or by optical fibers and an associated beam of laser light, for example.

    摘要翻译： 一种用于将诸如栓塞线圈的沉积材料装载到形状记忆聚合物（SMP）夹持/释放机构中的方法和装置。 该装置能够通过例如SMP机构中的真空和SMP机构的外部上的静水压力之间的压差来施加均匀的压力，以通过SMP机构来确保在沉积材料上的握持。 将机构的SMP管材料加热至高于玻璃化转变温度（Tg），同时重塑，随后冷却至Tg以下以冻结形状。 加热和/或冷却可以例如由施加加压的相同的水提供，或者可以通过包封在SMP机构中的光纤施加加热，以引导例如激光束。 在使用时，通过将SMP材料再加热到高于Tg的温度Tg，沉积材料从SMP机制释放，由此其恢复到初始形状。 SM材料的再加热可以通过例如通过相关联的导管或通过光纤和相关的激光束注入加热的流体（水）来进行。

    Medical devices utilizing optical fibers for simultaneous power, communications and control
    5.
    发明授权
    Medical devices utilizing optical fibers for simultaneous power, communications and control 有权
    利用光纤同时进行电力，通信和控制的医疗设备

    公开(公告)号：US06575965B1

    公开(公告)日：2003-06-10

    申请号：US09713988

    申请日：2000-11-16

    申请人： Joseph P. Fitch ,  Dennis L. Matthews ,  Karla G. Hagans ,  Abraham P. Lee ,  Peter Krulevitch ,  William J. Benett ,  Robert E. Clough ,  Luiz B. DaSilva ,  Peter M. Celliers

    发明人： Joseph P. Fitch ,  Dennis L. Matthews ,  Karla G. Hagans ,  Abraham P. Lee ,  Peter Krulevitch ,  William J. Benett ,  Robert E. Clough ,  Luiz B. DaSilva ,  Peter M. Celliers

    IPC分类号： A61B1822

    CPC分类号： A61B17/12022 ,  A61B5/0084 ,  A61B17/1214 ,  A61B17/29 ,  A61B2017/00292 ,  A61B2017/00345 ,  A61B2017/12072 ,  A61B2017/12077 ,  A61B2017/2926

    摘要： A medical device is constructed in the basic form of a catheter having a distal end for insertion into and manipulation within a body and a proximal end providing for a user to control the manipulation of the distal end within the body. A fiberoptic cable is disposed within the catheter and having a distal end proximate to the distal end of the catheter and a proximal end for external coupling of laser light energy. A laser-light-to-mechanical-power converter is connected to receive light from the distal end of the fiber optic cable and may include a photo-voltaic cell and an electromechanical motor or a heat-sensitive photo-thermal material. An electronic sensor is connected to receive electrical power from said distal end of the fiberoptic cable and is connected to provide signal information about a particular physical environment and communicated externally through the fiberoptic cable to the proximal end thereof. A mechanical sensor is attached to the distal end of the fiberoptic cable and connected to provide light signal information about a particular physical environment and communicated externally through the fiberoptic cable.

    摘要翻译： 医疗装置构造成具有导管的基本形式，其具有用于插入体内和在体内操作的远端，并且近端为使用者提供控制体内远端的操作。 光纤电缆设置在导管内并且具有靠近导管远端的远端和用于激光光能的外部耦合的近端。 连接激光 - 光机械功率转换器以接收来自光纤电缆的远端的光，并且可以包括光电池和机电马达或热敏光热材料。 电子传感器被连接以从光纤电缆的所述远端接收电力，并且被连接以提供关于特定物理环境的信号信息，并且通过光纤电缆向外传播到其近端。 机械传感器连接到光纤电缆的远端并被连接以提供关于特定物理环境的光信号信息，并通过光纤电缆在外部通信。

    Micro devices using shape memory polymer patches for mated connections
    6.
    发明授权
    Micro devices using shape memory polymer patches for mated connections 失效
    使用形状记忆聚合物贴片的微型器件用于配对连接

    公开(公告)号：US6086599A

    公开(公告)日：2000-07-11

    申请号：US246878

    申请日：1999-02-08

    申请人： Abraham P. Lee ,  Joseph P. Fitch

    发明人： Abraham P. Lee ,  Joseph P. Fitch

    IPC分类号： A61B17/00 ,  A61B17/12 ,  A61B17/30 ,  A61F2/00 ,  A61F2/06 ,  A61F2/84

    CPC分类号： A61F2/95 ,  A61B17/12022 ,  A61B17/30 ,  A61B2017/00473 ,  A61B2017/00867 ,  A61B2017/12077 ,  A61F2002/30095 ,  A61F2002/9528 ,  A61F2002/9534 ,  A61F2210/0023

    摘要： A method and micro device for repositioning or retrieving miniature devices located in inaccessible areas, such as medical devices (e.g., stents, embolic coils, etc.) located in a blood vessel. The micro repositioning or retrieving device and method uses shape memory polymer (SMP) patches formed into mating geometries (e.g., a hoop and a hook) for re-attachment of the deposited medical device to a catheter or guidewire. For example, SMP or other material hoops are formed on the medical device to be deposited in a blood vessel, and SMP hooks are formed on the micro device attached to a guidewire, whereby the hooks on the micro device attach to the hoops on the medical device, or vice versa, enabling deposition, movement, re-deposit, or retrieval of the medical device. By changing the temperature of the SMP hooks, the hooks can be attached to or released from the hoops located on the medical device. An exemplary method for forming the hooks and hoops involves depositing a sacrificial thin film on a substrate, patterning and processing the thin film to form openings therethrough, depositing or bonding SMP materials in the openings so as to be attached to the substrate, and removing the sacrificial thin film.

    摘要翻译： 一种用于重新定位或检索位于不可接近区域中的微型装置的方法和微装置，例如位于血管中的医疗装置（例如支架，栓塞线圈等）。 微型重新定位或取回装置和方法使用形成为配合几何形状的形状记忆聚合物（SMP）贴片（例如，箍和钩），用于将沉积的医疗装置重新附接到导管或导丝。 例如，在医疗装置上形成SMP或其他材料箍，以沉积在血管中，并且SMP钩形成在附着于导丝的微型装置上，由此微型装置上的钩附着在医疗用的箍上 装置，反之亦然，能够进行医疗装置的沉积，移动，重新沉积或取回。 通过改变SMP钩的温度，钩可以附接到位于医疗装置上的箍上或从其上释放。 用于形成钩和箍的示例性方法包括在基底上沉积牺牲薄膜，图案化和处理薄膜以形成穿过其中的开口，将SMP材料沉积或粘合在开口中以便附着到基底上， 牺牲薄膜。

    X-ray compass for determining device orientation
    7.
    发明授权
    X-ray compass for determining device orientation 失效
    用于确定设备方向的X光指南针

    公开(公告)号：US5912945A

    公开(公告)日：1999-06-15

    申请号：US880850

    申请日：1997-06-23

    申请人： Luiz B. Da Silva ,  Dennis L. Matthews ,  Joseph P. Fitch ,  Matthew J. Everett ,  Billy W. Colston ,  Gary F. Stone

    发明人： Luiz B. Da Silva ,  Dennis L. Matthews ,  Joseph P. Fitch ,  Matthew J. Everett ,  Billy W. Colston ,  Gary F. Stone

    IPC分类号： G01T1/161 ,  A61B17/00

    CPC分类号： G01T1/161

    摘要： An apparatus and method for determining the orientation of a device with respect to an x-ray source. In one embodiment, the present invention is coupled to a medical device in order to determine the rotational orientation of the medical device with respect to the x-ray source. In such an embodiment, the present invention is comprised of a scintillator portion which is adapted to emit photons upon the absorption of x-rays emitted from the x-ray source. An x-ray blocking portion is coupled to the scintillator portion. The x-ray blocking portion is disposed so as to vary the quantity of x-rays which penetrate the scintillator portion based upon the particular rotational orientation of the medical device with respect to the x-ray source. A photon transport mechanism is also coupled to the scintillator portion. The photon transport mechanism is adapted to pass the photons emitted from the scintillator portion to an electronics portion. By analyzing the quantity of the photons, the electronics portion determines the rotational orientation of the medical device with respect to the x-ray source.

    摘要翻译： 一种用于确定装置相对于x射线源的取向的装置和方法。 在一个实施例中，本发明被耦合到医疗装置，以便确定医疗装置相对于x射线源的旋转取向。 在这样的实施例中，本发明包括闪烁体部分，其适于在吸收从X射线源发射的x射线时发射光子。 X射线阻挡部分耦合到闪烁体部分。 X射线阻挡部分被设置成基于医疗装置相对于x射线源的特定旋转取向来改变穿透闪烁体部分的X射线的量。 光子传输机构也耦合到闪烁体部分。 光子传输机构适于将从闪烁器部分发射的光子传递到电子部分。 通过分析光子的数量，电子部分确定医疗装置相对于x射线源的旋转取向。

    Digital filtering by threshold decomposition
    10.
    发明授权
    Digital filtering by threshold decomposition 失效
    通过阈值分解进行数字滤波

    公开(公告)号：US4868773A

    公开(公告)日：1989-09-19

    申请号：US111112

    申请日：1987-10-22

    申请人： Edward J. Coyle ,  Neal C. Gallagher, Jr. ,  Steven C. Bass ,  Joseph P. Fitch ,  Ronald G. Harber

    发明人： Edward J. Coyle ,  Neal C. Gallagher, Jr. ,  Steven C. Bass ,  Joseph P. Fitch ,  Ronald G. Harber

    IPC分类号： H03H17/02

    CPC分类号： H03H17/0263

    摘要： A method and apparatus of digitally filtering an M-level signal decomposes the M-level signal into M-1 binary threshold signals by thresholding it at each value from 1 to M-1. The kth threshold signal has the value 1 at a given position if and only if the input signal is at least k at that position; otherwise it has the value 0. Filtering each of the MSTATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENTThis invention was made with government support under Research Grant ECS-8306235 from the National Science Foundation. The government may have rights in this invention.

    摘要翻译： 对M级信号进行数字滤波的方法和装置，通过在从1到M-1的每个值进行阈值处理将M级信号分解成M-1个二进制阈值信号。 当且仅当该位置的输入信号至少为k时，第k个阈值信号在给定位置具有值1; 否则它具有值0.用所需的二进制运算符过滤每个M-1阈值信号。 最后，来自所有滤波器的二进制输出被按位相加以产生经数字滤波的输出信号。