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41.发明授权Orthopedic device of biocompatible polymer with oriented fiber reinforcement 失效具有定向纤维增强的生物聚合聚合物的正交装置公开(公告)号：US5064439A
公开(公告)日：1991-11-12
申请号：US5091
申请日：1987-01-20
Applicant: Fu-Kuo Chang , Kenneth Reifsnider , James A. Davidson , Frederick S. Georgette
Inventor： Fu-Kuo Chang , Kenneth Reifsnider , James A. Davidson , Frederick S. Georgette
IPC: A61F2/02 , A61F2/00 , A61F2/30 , A61F2/36 , A61L27/00 , A61L27/44 , B29C70/46 , B29D99/00 , B32B27/12
CPC classification number: B29D99/0007 , A61F2/30965 , A61F2/36 , A61L27/443 , B29C70/46 , A61F2/3094 , A61F2002/30009 , A61F2002/3686 , A61F2250/0028 , B29L2031/7532 , Y10S623/911
Abstract: Orthopedic device of biocompatible polymer with oriented fiber reinforcement. There is provided a device such as a hip stem which has a longitudinally curved body. The reinforcing fibers are continuous filament fiber plies with parallel oriented fibers in each ply. The plies are curved longitudinally to approximately correspond to the curve of the body. In one embodiment, there are longitudinally oriented fiber plies at or near the surfaces of the device and plies with fibers offset at 5.degree.-40.degree. from the longitudinal axis between the surface layers. The fiber orientation is balanced by providing a ply of negatively angled offset fibers of a similar angle for each positively angled offset ply. The device is made by molding plies preimpregnated with polymer (prepregs) simultaneously, by molding a plurality of prepregs into segments which are then molded together, or by molding a segment and incrementally molding additional layers of prepregs thereto in a series of progressively larger molds.
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42.发明授权
公开(公告)号：US4745833A
公开(公告)日：1988-05-24
申请号：US40850
申请日：1987-04-20
Applicant: James A. Davidson
Inventor： James A. Davidson
CPC classification number: B26F1/3853 , B26D1/305 , B26D5/42 , B26D7/015 , Y10T83/576 , Y10T83/7507 , Y10T83/7513 , Y10T83/758 , Y10T83/817 , Y10T83/8743 , Y10T83/8799 , Y10T83/8805 , Y10T83/8828
Abstract: Frame members of the apparatus mount cutter assemblies that are aligned by relative adjustive movement of the frame members with edges of a cutout that is to be cut from sheet material. The adjustive relative movement of the frame members additionally effects adjustment of the relative positions of the cutter assemblies and associated cam members also carried by the frame members. This in turn causes the cuts made by the cutter assemblies to be of the same length as the therewith aligned cutout edges. The apparatus preferably further includes clamping members that engages the sheet material during each cutting operation, and drive components for imparting desired motions to the various movable components of the apparatus.
Abstract translation: 装置安装刀具组件的框架构件，其通过框架构件与要从片材切割的切口的边缘的相对调节运动对准。 框架构件的调节相对运动另外实现了由框架构件承载的切割器组件和相关联的凸轮构件的相对位置的调整。 这又导致由切割器组件制成的切口与其对准的切口边缘具有相同的长度。 该装置优选地还包括在每个切割操作期间接合片材的夹紧构件以及用于将期望的运动传递给装置的各种可移动部件的驱动部件。
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公开(公告)号：US5782910A
公开(公告)日：1998-07-21
申请号：US468536
申请日：1996-06-06
Applicant: James A. Davidson
Inventor： James A. Davidson
IPC: A61F2/02 , A61B17/22 , A61B17/72 , A61B17/74 , A61B17/78 , A61B17/80 , A61B17/86 , A61C7/12 , A61C8/00 , A61F2/00 , A61F2/04 , A61F2/06 , A61F2/24 , A61F2/28 , A61F2/30 , A61F2/36 , A61F2/38 , A61F2/84 , A61F2/90 , A61K6/04 , A61L27/00 , A61L27/06 , A61L27/50 , A61L31/02 , A61L33/00 , A61L33/02 , A61M1/10 , A61N1/05 , C22C14/00 , C22C30/00 , A61F2/22
CPC classification number: A61M25/09 , A61B17/72 , A61B17/746 , A61B17/80 , A61B17/866 , A61C7/12 , A61C8/0012 , A61F2/2403 , A61F2/2448 , A61F2/30767 , A61L27/06 , A61L27/507 , A61L31/022 , A61L33/022 , A61M1/1037 , A61M1/1051 , A61M1/122 , A61N1/05 , A61N1/056 , C22C14/00 , C22C30/00 , A61B17/7275 , A61B17/8061 , A61B17/86 , A61B2017/22038 , A61F2/0077 , A61F2/07 , A61F2/2406 , A61F2/2421 , A61F2/2424 , A61F2/2442 , A61F2/367 , A61F2/38 , A61F2/3859 , A61F2/389 , A61F2/91 , A61F2/958 , A61F2002/30677 , A61F2002/30922 , A61F2002/3631 , A61F2002/368 , A61F2250/0067 , A61F2310/00023 , A61F2310/0058 , A61F2310/00592 , A61F2310/00616 , A61F2310/00634 , A61F2310/0064 , A61F2310/00658 , A61F2310/00748 , A61F2310/00766 , A61F2310/00772 , A61F2310/0088 , A61F2310/00892 , A61F2310/00898 , A61L2430/36 , A61M1/10 , A61M2025/0062
Abstract: Cardiovascular and other medical implants fabricated from low-modulus Ti--Nb--Zr alloys to provide enhanced biocompatibility and hemocompatibility. The cardiovascular implants may be surface hardened by oxygen or nitrogen diffusion or by coating with a tightly adherent, hard, wear-resistant, hemocompatible ceramic coating. The cardiovascular implants include heart valves, total artificial heart implants, ventricular assist devices, vascular grafts, stents, electrical signal carrying devices such as pacemaker and neurological leads, defibrillator leads, and the like. It is contemplated that the Ti--Nb--Zr alloy can be substituted as a fabrication material for any cardiovascular implant that either comes into contact with blood thereby demanding high levels of hemocompatibility, or that is subject to microfretting, corrosion, or other wear and so that a low modulus metal with a corrosion-resistant, hardened surface would be desirable.
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公开(公告)号：US5683442A
公开(公告)日：1997-11-04
申请号：US745221
申请日：1996-11-08
Applicant: James A. Davidson
Inventor： James A. Davidson
IPC: A61B17/22 , A61B17/72 , A61B17/74 , A61B17/78 , A61B17/80 , A61B17/86 , A61F2/00 , A61F2/06 , A61F2/24 , A61F2/30 , A61F2/36 , A61F2/38 , A61F2/84 , A61F2/90 , A61L27/06 , A61L27/50 , A61L31/02 , A61L33/02 , A61M1/10 , A61N1/05 , C22C14/00 , C22C30/00 , A61N1/04
CPC classification number: A61F2/2448 , A61L27/06 , A61L27/507 , A61L31/022 , A61L33/022 , A61M1/1051 , A61N1/05 , A61N1/056 , C22C14/00 , C22C30/00 , A61F2/0077 , A61F2/07 , A61F2/2406 , A61F2/2421 , A61F2/2424 , A61F2250/0067 , A61M1/10 , A61M1/1037
Abstract: Medical leads fabricated from low-modulus Ti-Nb-Zr alloys to provide enhanced biocompatibility and hemocompatibility. The medical leads may be surface hardened by oxygen or nitrogen diffusion or by coating with a tightly adherent, hard, wear-resistant, hemocompatible ceramic coating. It is contemplated that the Ti-Nb-Zr alloy can be substituted as a fabrication material for any portion of a medical lead that either comes into contact with blood thereby demanding high levels of hemocompatibility, or that is subject to microfretting, corrosion, or other wear and so that a low modulus metal with a corrosion-resistant, hardened surface would be desirable.
Abstract translation: 由低模量Ti-Nb-Zr合金制造的医疗导线提供增强的生物相容性和血液相容性。 医用引线可以通过氧气或氮气扩散进行表面硬化，也可以通过用紧密粘附，耐磨，耐溶血的兼容陶瓷涂层进行涂覆。 可以预期，Ti-Nb-Zr合金可以被替代为用于与血液接触的任何部分医疗铅的制造材料，从而要求高水平的血液相容性，或者要经受微阵列，腐蚀或其它 因此具有耐腐蚀，硬化表面的低模量金属将是理想的。
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公开(公告)号：US5676632A
公开(公告)日：1997-10-14
申请号：US469234
申请日：1995-06-06
Applicant: James A. Davidson
Inventor： James A. Davidson
IPC: A61F2/02 , A61B17/22 , A61B17/72 , A61B17/74 , A61B17/78 , A61B17/80 , A61B17/86 , A61C7/12 , A61C8/00 , A61F2/00 , A61F2/04 , A61F2/06 , A61F2/24 , A61F2/28 , A61F2/30 , A61F2/36 , A61F2/38 , A61F2/84 , A61F2/90 , A61K6/04 , A61L27/00 , A61L27/06 , A61L27/50 , A61L31/02 , A61L33/00 , A61L33/02 , A61M1/10 , A61N1/05 , C22C14/00 , C22C30/00 , A61M1/12
CPC classification number: A61M25/09 , A61B17/72 , A61B17/746 , A61B17/80 , A61B17/866 , A61C7/12 , A61C8/0012 , A61F2/2403 , A61F2/2448 , A61F2/30767 , A61L27/06 , A61L27/507 , A61L31/022 , A61L33/022 , A61M1/1037 , A61M1/1051 , A61M1/122 , A61N1/05 , A61N1/056 , C22C14/00 , C22C30/00 , A61B17/7275 , A61B17/8061 , A61B17/86 , A61B2017/22038 , A61F2/0077 , A61F2/07 , A61F2/2406 , A61F2/2421 , A61F2/2424 , A61F2/2442 , A61F2/367 , A61F2/38 , A61F2/3859 , A61F2/389 , A61F2/91 , A61F2/958 , A61F2002/30677 , A61F2002/30922 , A61F2002/3631 , A61F2002/368 , A61F2250/0067 , A61F2310/00023 , A61F2310/0058 , A61F2310/00592 , A61F2310/00616 , A61F2310/00634 , A61F2310/0064 , A61F2310/00658 , A61F2310/00748 , A61F2310/00766 , A61F2310/00772 , A61F2310/0088 , A61F2310/00892 , A61F2310/00898 , A61L2430/36 , A61M1/10 , A61M2025/0062
Abstract: Ventricular assist devices fabricated from low-modulus Ti--Nb--Zr alloys to provide enhanced biocompatibility and hemocompatibility. The ventricular assist devices may be surface hardened by oxygen or nitrogen diffusion or by coating with a tightly adherent, hard, wear-resistant, hemocompatible ceramic coating. It is contemplated that the Ti--Nb--Zr alloy can be substituted as a fabrication material for any portion of a ventricular assist device that either comes into contact with blood thereby demanding high levels of hemocompatibility, or that is subject to microfretting, corrosion, or other wear and so that a low modulus metal with a corrosion-resistant, hardened surface would be desirable.
Abstract translation: 室性辅助装置由低模量Ti-Nb-Zr合金制成，以提供增强的生物相容性和血液相容性。 心室辅助装置可以通过氧气或氮气扩散进行表面硬化，或者通过用紧密粘附的硬质耐磨的血液相容性陶瓷涂层进行表面硬化。 考虑到可以将Ti-Nb-Zr合金替代为与血液接触的心室辅助装置的任何部分的制造材料，从而要求高水平的血液相容性，或者经受微淋丝，腐蚀或 因此，具有耐腐蚀，硬化表面的低模量金属将是理想的。
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公开(公告)号：US4790850A
公开(公告)日：1988-12-13
申请号：US64634
申请日：1987-06-22
Applicant: Richard L. Dunn , Danny H. Lewis , Thomas W. Sander , James A. Davidson , Neil B. Beals , Yancy L. Gill
Inventor： Richard L. Dunn , Danny H. Lewis , Thomas W. Sander , James A. Davidson , Neil B. Beals , Yancy L. Gill
IPC: A61F2/08
CPC classification number: A61F2/08 , D04C1/12 , D10B2509/00
Abstract: A prosthetic ligament assembly includes a nonaugmented prosthetic ligament for permanently replacing a natural ligament spanning first and second body members, such as the femur and tibia, and a bone screw adapted for tensioning the prosthetic ligament during implantation. The prosthetic ligament includes a load bearing member intertwined into a plain braid from a plurality of biocompatible, high strength, ultra high molecular weight polyethylene yarns. Each yarn includes at least fifty fibers and has a tensile strength greater than or equal to about 100,000 psi. The load bearing member has a gage section and a loop at each end thereof for anchoring the load bearing member to the body members. The load bearing member is preloaded to remove slack therefrom. The load bearing member may be used alone or may be formed into a hollow braid having a core disposed within the hollow portion of the braid to permit radiographic visualization of the prosthetic ligament. A sheath may be friction fit or molded onto the exterior of the gage section. The assembly also includes one or two bone screws for complimentary engagement with the loops of the load bearing member. The bone screws have a tapered section extending beneath the head of the screw to the shank for tensioning the prosthetic ligament during implantation.
Abstract translation: 假肢韧带组件包括用于永久地替换跨越第一和第二身体构件（例如股骨和胫骨）的天然韧带的修饰韧带，以及适于在植入期间张紧假体韧带的骨螺钉。 假体韧带包括从多个生物相容的高强度超高分子量聚乙烯纱线缠绕成平纹编织物的承载构件。 每个纱线包括至少五十根纤维，并且具有大于或等于约100,000psi的拉伸强度。 承载构件在其每个端部具有一定量部分和一个环，用于将承载构件锚固到主体构件上。 承载构件被预加载以从其中移除松弛。 承载构件可以单独使用或者可以形成为具有设置在编织物的中空部分内的芯的中空编织物，以允许假体韧带的放射线显影。 护套可以摩擦配合或模制到计量部分的外部。 组件还包括一个或两个骨螺钉，用于与承载构件的环互补接合。 骨螺钉具有在螺钉头部下方延伸到柄部的锥形部分，用于在植入期间张紧假体韧带。
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公开(公告)号：US08986374B2
公开(公告)日：2015-03-24
申请号：US13104648
申请日：2011-05-10
Applicant: Hengchu Cao , Brian Conklin , Paul Schmidt , Grace Myong Kim , James A. Davidson , Hoa Trinh Tran , Kristy Luong Tam
Inventor： Hengchu Cao , Brian Conklin , Paul Schmidt , Grace Myong Kim , James A. Davidson , Hoa Trinh Tran , Kristy Luong Tam
IPC: A61F2/24
CPC classification number: A61F2/2427 , A61F2/2409 , A61F2/2412 , A61F2/2415
Abstract: Disclosed prosthetic valves can comprise a sewing ring configured to secure the valve to an implantation site. Some disclosed valves comprise a resiliently collapsible frame having a neutral configuration and a collapsed deployment configuration. Some disclosed frames can self-expand to the neutral configuration when released from the collapsed deployment configuration. Collapsing a disclosed valve can provide convenient access to the sewing ring, such as for securing the valve to the implantation site, as well as for the insertion of the valve through relatively small surgical incisions.
Abstract translation: 公开的假体瓣膜可以包括构造成将瓣膜固定到植入部位的缝合环。 一些公开的阀包括具有中性构型和折叠展开构型的弹性可折叠框架。 当从折叠部署配置释放时，一些公开的框架可以自扩展到中立配置。 折叠所公开的阀可以方便地进入缝合环，例如用于将瓣膜固定到植入部位，以及通过相对较小的手术切口插入瓣膜。
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公开(公告)号：US20110276128A1
公开(公告)日：2011-11-10
申请号：US13104648
申请日：2011-05-10
Applicant: Hengchu Cao , Brian Conklin , Paul Schmidt , Grace Myong Kim , James A. Davidson , Hoa Trinh Tran , Kristy Luong Tam
Inventor： Hengchu Cao , Brian Conklin , Paul Schmidt , Grace Myong Kim , James A. Davidson , Hoa Trinh Tran , Kristy Luong Tam
IPC: A61F2/24
CPC classification number: A61F2/2427 , A61F2/2409 , A61F2/2412 , A61F2/2415
Abstract: Disclosed prosthetic valves can comprise a sewing ring configured to secure the valve to an implantation site. Some disclosed valves comprise a resiliently collapsible frame having a neutral configuration and a collapsed deployment configuration. Some disclosed frames can self-expand to the neutral configuration when released from the collapsed deployment configuration. Collapsing a disclosed valve can provide convenient access to the sewing ring, such as for securing the valve to the implantation site, as well as for the insertion of the valve through relatively small surgical incisions.
Abstract translation: 公开的假体瓣膜可以包括构造成将瓣膜固定到植入部位的缝合环。 一些公开的阀包括具有中性构型和折叠展开构型的弹性可折叠框架。 当从折叠部署配置释放时，一些公开的框架可以自扩展到中立配置。 折叠所公开的阀可以方便地进入缝合环，例如用于将瓣膜固定到植入部位，以及通过相对较小的手术切口插入瓣膜。
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公开(公告)号：US06443730B1
公开(公告)日：2002-09-03
申请号：US09870263
申请日：2001-05-30
Applicant: James A. Davidson
Inventor： James A. Davidson
IPC: A61C502
Abstract: A break-resistant composite comprising a plurality of fibers at least partially embedded in a polymer matrix forms a composite for making at least a portion of an endodonic instrument. At least a portion of the fibers are selected from a group consisting of partially twisted fibers and off-axis oriented fibers. The composite instrument can contain abrasive particulates to improve cutting and wear resistance for use in root canal procedures. The twisted fiber composite material allows for applied torque load response, improved flexibility within the root canal, and reduces or eliminates gross breakage of the instrument during use. The inventive composite can be molded or machined to make an endodnic instrument having certain desired diameters, tapers, helical recesses, and other design features.
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公开(公告)号：US06200685B1
公开(公告)日：2001-03-13
申请号：US09241812
申请日：1999-02-02
Applicant: James A. Davidson
Inventor： James A. Davidson
IPC: B32B900
CPC classification number: A63B53/04 , A61B17/72 , A61B17/7275 , A61B17/80 , A61B17/8635 , A61B17/866 , A61C8/0012 , A61F2/30767 , A61F2/32 , A61F2/34 , A61F2/36 , A61F2/3662 , A61F2/367 , A61F2/38 , A61F2/3859 , A61F2/389 , A61F2/82 , A61F2002/2817 , A61F2002/3008 , A61F2002/30332 , A61F2002/30677 , A61F2002/30878 , A61F2002/30892 , A61F2002/30909 , A61F2002/30922 , A61F2002/3611 , A61F2002/3625 , A61F2002/365 , A61F2220/0033 , A61F2250/0098 , A61F2310/00023 , A61L27/06 , A61L27/28 , A61L31/022 , A61L31/08 , A61N1/0587 , A63B53/047 , A63B53/12 , A63B60/06 , A63B60/08 , A63B60/10 , A63B2209/00 , C22C14/00 , C22F1/183 , C23C30/00 , E21B10/46 , E21B17/00 , F16B35/00
Abstract: This invention describes a corrosion-resistant, high-strength, low-modulus, titanium based alloy having about 5-11 weight percent Mo and about 6-15 weight percent Hf. This alloy is suitable for use in the fabrication of articles for medical and non-medical applications having low modulus, improved corrosion resistance and surface hardening. To increase strength, Cr, Si and Fe can be added in small amounts as well as increasing levels of interstitial oxygen, nitrogen or carbon. To maintain low elastic modulus, Mo can be partially substituted by Nb.
Abstract translation: 本发明描述了具有约5-11重量％Mo和约6-15重量％Hf的耐腐蚀，高强度，低模量的钛基合金。 该合金适用于制造具有低模量，改善的耐腐蚀性和表面硬化的用于医疗和非医疗应用的制品。 为了提高强度，可以少量添加Cr，Si和Fe以及间隙氧，氮或碳的增加水平。 为了保持低弹性模量，Mo可以部分地被Nb取代。
