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    Miniature x-ray device having cold cathode
    32.
    发明授权
    Miniature x-ray device having cold cathode 失效
    具有冷阴极的微型x射线装置

    公开(公告)号：US5854822A

    公开(公告)日：1998-12-29

    申请号：US900609

    申请日：1997-07-25

    Applicant: Victor I. Chornenky ,  Dale L. Schreiner ,  Michael R. Forman

    Inventor： Victor I. Chornenky ,  Dale L. Schreiner ,  Michael R. Forman

    IPC: H01J35/06 ,  A61N5/10 ,  H01J35/20 ,  H01J35/32

    CPC classification number: A61N5/1001 ,  H01J35/32 ,  A61N5/1002

    Abstract: Generally, the present invention provides a device for insertion into a body and delivery of x-ray radiation, and a method for fabricating such a device. The device includes a connector, the vacuum housing, an anode and a cathode having a granular surface and being composed of a material that allows it to act as a getter. The cathode may also contain diamond material in one embodiment.

    Abstract translation: 通常，本发明提供了一种用于插入身体和X射线辐射的输送的装置，以及用于制造这种装置的方法。 该装置包括连接器，真空壳体，具有颗粒表面的阳极和阴极，并且由允许其用作吸气剂的材料组成。 在一个实施方案中，阴极还可以含有金刚石材料。

    Laser ablation of angioplasty catheters and balloons
    34.
    发明授权
    Laser ablation of angioplasty catheters and balloons 失效
    血管成形术导管和气囊的激光消融

    公开(公告)号：US5733301A

    公开(公告)日：1998-03-31

    申请号：US582371

    申请日：1996-01-11

    Applicant: Michael R. Forman

    Inventor： Michael R. Forman

    IPC: A61M25/00 ,  A61M29/02 ,  A61M29/00

    CPC classification number: A61M25/1029 ,  A61M25/104 ,  A61M2025/1031

    Abstract: A dilatation balloon is fabricated according to a process that yields high hoop strength and uniformity in balloon wall thickness. A length of tubing is axially elongated and radially expanded in a form to provide the requisite biaxial orientation and strength. Then, an excimer laser is used to remove the polymeric material by photo-chemical ablation, virtually without thermal effects. Dilatation balloon walls are thinned primarily along tapered sections between proximal and distal balloon stems and a medial working section of the balloon. Material removal, particularly near the balloon stems, enables tighter wrapping of the balloon for a reduced delivery profile, and reduces rigidity near the stems for better maneuverability of the catheter in tortuous passageways. The balloon tapered sections are reduced to a wall thickness substantially equal to that of the medial section. Alternatively, an array of grooves is formed in each tapered section.

    Abstract translation: 根据产生高气球强度和球囊壁厚度均匀性的方法制造扩张球囊。 一段长度的管材是轴向伸长的并以一种形式径向扩张以提供必要的双轴取向和强度。 然后，准分子激光器被用于通过光化学消融去除聚合物材料，实际上没有热效应。 扩张气球壁主要在近端和远端气囊杆之间的锥形部分和气囊的内侧工作部分之间变薄。 特别是气囊杆附近的材料去除使得球囊能够更紧密地包裹以减少输送轮廓，并且降低杆附近的刚度，从而更好地操纵导管在曲折通道中的机动性。 气囊锥形部分被还原成基本上等于中间部分的壁厚。 或者，在每个锥形部分中形成有一组凹槽。

    Process for producing slippery, tenaciously adhering hydrogel coatings containing a polyurethane-urea polymer hydrogel commingled with at least one other, dissimilar polymer hydrogel
    35.
    发明授权
    Process for producing slippery, tenaciously adhering hydrogel coatings containing a polyurethane-urea polymer hydrogel commingled with at least one other, dissimilar polymer hydrogel 失效
    含有聚氨酯 - 尿素聚合物水凝胶的湿滑粘结水凝胶涂层的方法，该水凝胶与至少一种其它不同的聚合物水凝胶

    公开(公告)号：US5576072A

    公开(公告)日：1996-11-19

    申请号：US382459

    申请日：1995-02-01

    Applicant: Fritz Hostettler ,  David Rhum ,  Michael R. Forman ,  Michael N. Helmus ,  Ni Ding

    Inventor： Fritz Hostettler ,  David Rhum ,  Michael R. Forman ,  Michael N. Helmus ,  Ni Ding

    IPC: A61L29/04 ,  A61L29/08 ,  B05D7/00 ,  B05D7/02 ,  C08G18/10 ,  C08G18/48 ,  C08G18/75 ,  C09D175/04 ,  B05D3/00 ,  B29C71/02 ,  C04B41/00 ,  H05H1/00

    CPC classification number: B05D7/54 ,  A61L29/049 ,  A61L29/085 ,  B05D7/02 ,  C08G18/10 ,  C08G18/4833 ,  C08G18/4837 ,  C08G18/755 ,  C08G18/758 ,  C09D175/04 ,  C08G2210/00 ,  Y10T428/31551

    Abstract: A process for preparing coating compositions of a commingled hydrogel of a polyurethane-polyurea polymer hydrogel and at least one other polymer hydrogel of a polymer different from polyurethane-polyurea; a process for making materials composed of a polymeric plastic or rubber substrate or a metallic substrate, with a coating of the commingled hydrogel thereon; and a process for making medical devices with a coating of the commingled hydrogel thereon, are disclosed. The coating compositions tenaciously adhere to the substrate materials and medical devices to which they are applied due to bonding of a tie coat to a reactive substrate surface and due to the commingling of the two hydrogel components. The coating compositions and coated materials and medical devices are non-toxic and biocompatible, making them ideally suited for use in applications such as for catheters, catheter balloons and stents. In such applications, the coating compositions, coated materials, and coated medical devices made therefrom demonstrate low coefficients of friction in contact with body fluids, especially blood, as well as a high degree of wear permanence over prolonged use. The commingled hydrogel coatings are capable of being dried to facilitate storage of the devices to which they have been applied, and can be instantly reactivated for later use by exposure to water.

    Abstract translation: 制备聚氨酯 - 聚脲聚合物水凝胶的混合水凝胶和不同于聚氨酯 - 聚脲的聚合物的至少一种其它聚合物水凝胶的涂料组合物的方法; 制造由聚合物塑料或橡胶基材或金属基材组成的材料的方法，其上混合水凝胶的涂层; 并公开了在其上制造混合水凝胶涂层的医疗装置的方法。 涂层组合物由于粘结涂层与反应性基底表面的结合以及由于两种水凝胶组分的混合而顽固地粘附到其所施加的基底材料和医疗装置上。 涂料组合物和涂覆材料和医疗装置是无毒的和生物相容的，使得它们非常适用于诸如导管，导管气囊和支架的应用。 在这样的应用中，由其制成的涂料组合物，涂覆的材料和涂覆的医疗装置显示出与体液，特别是血液接触的低摩擦系数，以及长期使用时的高度的耐磨性。 混合的水凝胶涂层能够被干燥以便于其已被施加到的装置的储存，并且可以立即重新激活以供将来通过暴露于水中使用。

    Steerable variable stiffness device
    36.
    发明授权
    Steerable variable stiffness device 失效
    可转向可变刚度装置

    公开(公告)号：US5531685A

    公开(公告)日：1996-07-02

    申请号：US284076

    申请日：1994-08-01

    Applicant: Chad G. Hemmer ,  John A. Steen ,  Michael R. Forman ,  Jonathan R. McGrath

    Inventor： Chad G. Hemmer ,  John A. Steen ,  Michael R. Forman ,  Jonathan R. McGrath

    IPC: A61M25/01 ,  A61M37/00 ,  A61M25/00

    CPC classification number: A61M25/0158

    Abstract: An apparatus includes a flexible tubular member containing a shape-memory tube formed to include a lumen extending along the central axis of the tubular member. A liner sleeve extends through the lumen of the shape-memory tube and lies inside the tubular member. A control system selectively heats the shape-memory tube to its activated state causing the shape-memory tube to move toward a predetermined shape if it is different than its present configuration. Whether the shape-memory tube moves or not, it will increase significantly in stiffness, both axial and bending to help retain, hold, or wedge the apparatus in place in a selected body cavity while catheters or other objects are passed through a lumen in the liner sleeve.

    Abstract translation: 一种装置包括柔性管状构件，其包含形状记忆管，该形状记忆管形成为包括沿管状构件的中心轴延伸的内腔。 衬套套筒延伸穿过形状记忆管的内腔并位于管状构件的内部。 控制系统选择性地将形状记忆管加热至其激活状态，导致形状记忆管如果不同于其当前配置则朝预定形状移动。 无论形状记忆管是否移动，它将在刚度（轴向和弯曲）方面显着增加，以帮助将装置保持，保持或楔入所选体腔内的适当位置，同时导管或其它物体通过内窥镜 衬套。

    Angioplasty device
    37.
    发明授权
    Angioplasty device 失效
    血管成形术装置

    公开(公告)号：US5505699A

    公开(公告)日：1996-04-09

    申请号：US217306

    申请日：1994-03-24

    Applicant: Michael R. Forman ,  Michael N. Helmus ,  Joseph E. Laptewicz, Jr.

    Inventor： Michael R. Forman ,  Michael N. Helmus ,  Joseph E. Laptewicz, Jr.

    IPC: A61M25/00 ,  A61F2/82 ,  A61M29/02 ,  A61M29/00

    CPC classification number: A61M25/104 ,  A61M2025/0186 ,  A61M2025/09141 ,  A61M2025/1015 ,  A61M2025/1093

    Abstract: This invention relates to an angioplasty device that is formed from a hollow metallic tube, a balloon affixed adjacent the distal end of the tube and being in fluid communication with the lumen of the tube, a flexible distal segment connected to the distal end of the tube and a removable hub connected adjacent to the proximal end of the tube. The tube is preferably formed from a superelastic material such as nickel-titanium alloy. This invention also relates to various methods of using this angioplasty device.

    Abstract translation: 本发明涉及一种由中空金属管形成的血管成形术装置，邻近管的远端固定并与管的内腔流体连通的球囊，连接到管的远端的柔性远端段 以及与管的近端相邻连接的可移除的轮毂。 该管优选由诸如镍 - 钛合金的超弹性材料形成。 本发明还涉及使用该血管成形术装置的各种方法。

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