Solvent bonding method for polyolefin materials
    51.
    发明授权
    Solvent bonding method for polyolefin materials 失效
    聚烯烃材料的溶剂粘合方法

    公开(公告)号:US06613187B1

    公开(公告)日:2003-09-02

    申请号:US09392913

    申请日:1999-09-09

    Abstract: The present invention provides a method for using a polymeric cement to assemble medical devices. The method includes the steps of: (1) providing a first article of a low crystallinity polymer; (2) providing a second article of a low crystallinity polymer; (3) providing a cement composition having a first component of a cyclic olefin containing polymer or a bridged polycyclic hydrocarbon containing polymer and a second component of an effective amount of a solvent having a solubility parameter of less than about 20 (MPa)1/2; applying the cement composition to one of the first and second articles to define a bonding area; and (4) attaching the first article to the second article along the bonding area to fixedly attach the first article to the second article.

    Abstract translation: 本发明提供一种使用聚合物水泥来组装医疗装置的方法。 该方法包括以下步骤:(1)提供低结晶度聚合物的第一制品; (2)提供低结晶度聚合物的第二制品; (3)提供具有含环烯烃的聚合物或含桥连多环烃聚合物的第一组分和有效量的溶解度参数小于约20(MPa)1/2的溶剂的第二组分的水泥组合物 ; 将所述水泥组合物施加到所述第一和第二制品中的一个以限定粘合区域; 和(4)沿着接合区域将第一制品附接到第二制品以将第一制品固定地附接到第二制品。

    Laminated barriers for tissue implants
    57.
    发明授权
    Laminated barriers for tissue implants 失效
    组织植入物的层压屏障

    公开(公告)号:US5453278A

    公开(公告)日:1995-09-26

    申请号:US189125

    申请日:1994-01-28

    Abstract: Improved Implant assemblies and methodologies provide immuno-protection for implanted allografts, xenografts, and isografts. The assemblies and methodologies establish an improved boundary between the host and the implanted cells. The boundary structure is laminated, combining elements having different characteristics beneficial to the survival of the implanted cells. Filaments of adhesive material lay in between the elements. The filaments of adhesive material have been melted in place by the application of heat and solidified in place by cooling to secure the elements together into a composite laminated structure.

    Abstract translation: 改进的植入物组件和方法为植入的同种异体移植物,异种移植物和同种移植物提供免疫保护。 组件和方法在主机和植入的细胞之间建立了改进的边界。 层合边界结构,组合具有有利于植入细胞存活的不同特征的元件。 粘合剂材料的丝线位于元件之间。 粘合剂材料的长丝已经通过加热熔化在适当的位置,并通过冷却固化就位,以将元件固定在一起成为复合层压结构。

    Appratus for sealing and severing a web of film
    59.
    发明授权
    Appratus for sealing and severing a web of film 失效
    用于密封和切断胶片网的设置

    公开(公告)号:US4856259A

    公开(公告)日:1989-08-15

    申请号:US258945

    申请日:1988-10-17

    Abstract: An apparatus for sealing and severing a web of film is provided. The apparatus includes a sealing bar having a body portion including first and second sidewalls and a top portion for melting and severing a portion of a web of film. A backup member is provided located on an opposite side of the film from the sealing bar for urging the film against a portion of the sealing bar. The apparatus also includes a holder for holding the sealing bar, the holder includes a first side and a second side that define a center region for receiving at least a portion of the body of the sealing bar, and first and second sides having shoulders. The shoulders and top portion of the sealing bar are so constructed and arranged that they deflect a bead generated at a molten area of the film when the film is sealed and severed and substantially limit the creation of a resultant bead in a final cooled product.

    Abstract translation: 提供了一种用于密封和切断膜片的设备。 该装置包括具有包括第一和第二侧壁的主体部分和用于熔化和切断薄膜幅材的一部分的顶部的密封条。 提供了一个支撑构件,其位于膜的与密封条的相对侧上,用于将膜推压到密封条的一部分上。 该设备还包括用于保持密封条的保持器,保持器包括第一侧和第二侧,该第一侧和第二侧限定用于容纳密封条的主体的至少一部分的中心区域,以及具有肩部的第一和第二侧。 密封条的肩部和顶部是这样构造和布置的,使得它们在膜被密封和切断时偏转在膜的熔融区域处产生的珠粒,并且基本上限制了最终冷却产品中所得的珠粒的产生。

    Method and apparatus for measuring the loss modulus of materials
    60.
    发明授权
    Method and apparatus for measuring the loss modulus of materials 失效
    测量材料损耗模量的方法和装置

    公开(公告)号:US4170141A

    公开(公告)日:1979-10-09

    申请号:US880944

    申请日:1978-02-24

    Applicant: Lecon Woo

    Inventor: Lecon Woo

    CPC classification number: G01N3/32 G01N2291/02827

    Abstract: The loss modulus of a material is ascertained by subjecting a sample of the material to a mechanical vibration at the resonant frequency of the material. The dynamic driving force required to maintain the material in mechanical vibration at its resonant frequency is measured. Next, the static driving force required to displace the same material the same distance as when vibrating is measured. The quotient of the dynamic force divided by the static force is proportional to the tangent of the angle between elastic modulus and loss modulus of the material, or tan .delta.. Since the frequency of the material, when in vibration, is related to the elastic modulus of material, the loss modulus may be readily computed by multiplying the elastic modulus by tan .delta..An apparatus capable of performing this method includes a driving system that vibrates the sample material at its resonant frequency using a sinusoidal driving force which is 90.degree. out of phase with the material displacement and hence in phase with the sample's loss function.

    Abstract translation: 通过使材料的样品以材料的共振频率进行机械振动来确定材料的损耗模量。 测量将材料保持在其谐振频率处的机械振动所需的动态驱动力。 接下来,测量与振动相同的位置移动相同材料所需的静态驱动力。 动力除以静力的商与材料的弹性模量和损耗模量之间的角度的切线成正比,或tanδ。 由于材料的频率在振动时与材料的弹性模量有关,所以可以通过将弹性模量乘以tanδ来容易地计算损耗模量。

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