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1. 发明授权

US4192020A Heart valve prosthesis 失效
标题翻译：心脏瓣膜假体
公开(公告)号：US4192020A
公开(公告)日：1980-03-11
申请号：US790442
申请日：1977-04-25
申请人： Robert B. Davis , John Skelton , Richard E. Clark , Wilbur M. Swanson
发明人： Robert B. Davis , John Skelton , Richard E. Clark , Wilbur M. Swanson
IPC分类号： A61F2/06 , A61F2/24 , D03D3/02 , D03D7/00 , D03D15/00 , A61F1/22
CPC分类号： D03D15/00 , A61F2/06 , A61F2/2412 , B21F45/008 , D03D3/02 , D03D7/00 , D10B2321/022 , D10B2331/04 , D10B2401/061 , D10B2509/00 , Y10S623/90
摘要： A prosthesis for an inadequate or diseased heart valve, the prosthesis being formed of a porous fabric comprising multifilament synthetic yarns supported on a plural-lobed frame. The frame has generally parallel legs each comprising a pair of rod portions. The fabric is inserted between the rod portions of the legs to form flexible leaflets. Each leaflet consists essentially of a textile of filaments having a substantial number of open interstitial spaces in the range of 20 to 40 microns evenly distributed throughout the fabric. The resulting composite structures are free of thrombogenic complications.
摘要翻译：用于不充分或患病的心脏瓣膜的假体，所述假体由多孔织物形成，所述多孔织物包括支撑在多叶状框架上的复丝合成纱线。框架具有大致平行的腿，每个腿包括一对杆部分。将织物插入腿的杆部之间以形成柔性传单。每个小叶基本上由长丝的织物组成，其具有在整个织物中均匀分布的在20至40微米范围内的相当数量的开放间隙。所得到的复合结构没有血栓形成并发症。

2. 发明授权

US4297749A Heart valve prosthesis 失效
标题翻译：心脏瓣膜假体
公开(公告)号：US4297749A
公开(公告)日：1981-11-03
申请号：US125121
申请日：1980-02-27
申请人： Robert B. Davis , John Skelton , Richard E. Clark , Wilbur M. Swanson
发明人： Robert B. Davis , John Skelton , Richard E. Clark , Wilbur M. Swanson
IPC分类号： A61F2/24 , A61F1/22
CPC分类号： B21F45/008 , A61F2/2412 , Y10S623/90
摘要： A frame system for heart valve prosthesis. A first frame has at least three generally parallel legs each comprising a pair of rod portions connected at one end and diverging at the other end as lobes respectively connecting with rod portions of others of said legs. The lobes form an aperture therebetween and the legs are adapted to receive the margin of a valve leaflet between the rod portions thereof. Thus, the leaflet may be secured to two adjacent legs and the interconnecting lobe so as to have a free edge extending between said adjacent legs. A second frame is adapted to nest with the first frame and comprises a rod formed to be substantially congruent with the interconnecting lobes, whereby the leaflets may be secured to and between the frames.
摘要翻译：心脏瓣膜假体的框架系统。第一框架具有至少三个大致平行的腿，每个腿包括一对杆部分，该杆部分在一端连接并且在另一端处以分别与所述腿部中的其他杆的杆部分连接的凸起分开。叶片在它们之间形成孔，并且腿部适于在其杆部之间容纳瓣膜小叶的边缘。因此，小叶可以固定到两个相邻的腿和互连瓣，以便具有在所述相邻腿之间延伸的自由边缘。第二框架适于与第一框架嵌套并且包括形成为与互连凸角基本一致的杆，由此传单可以固定到框架之间并且在框架之间。

3. 发明授权

US4139581A Carburetor 失效
标题翻译：化油器
公开(公告)号：US4139581A
公开(公告)日：1979-02-13
申请号：US723979
申请日：1976-09-16
申请人： Wilbur M. Swanson
发明人： Wilbur M. Swanson
IPC分类号： F02M9/133 , F02M19/02 , F02M19/08 , F02M29/14
CPC分类号： F02M19/0217 , F02M19/081 , F02M9/133 , Y10S261/56 , Y10S261/78
摘要： A carburetor which comprises a casing, an air inlet at the upper end thereof and an air-fuel mixture discharge at the lower end thereof, with a venturi throat located downwardly of said inlet, a sonic throat below said venturi throat, and a diffuser section interconnecting the sonic throat and the discharge. Portions of the wall of the sonic throat are provided with a plurality of indentations, projections, or surface irregularities for stabilizing the flow therethrough and conducing to the uniformity of the air-fuel mixture. At least one portion of said sonic throat is movable with respect to the fixed portions of said throat for altering the cross-section thereof responsive to fuel requirements for combustion. One form of the invention embodies a plug vertically shiftable by a control shaft, having a fuel chamber with emission ports to the interior of the casing whereby said plug acts as an accelerator pump.
摘要翻译：一种化油器，包括壳体，其上端处的空气入口和其下端处的空气 - 燃料混合物排出口，位于所述入口下方的文丘里喉部，在所述文丘里喉部下方的声音喉部，以及扩散器部分连接声音喉咙和放电。声音喉部的壁的一些部分设置有多个凹口，突起或表面凹凸，用于稳定其中的流动并促进空气 - 燃料混合物的均匀性。所述声音喉部的至少一部分可相对于所述喉部的固定部分移动，以响应于燃烧的燃料需求而改变其横截面。本发明的一种形式体现了可由控制轴垂直移动的插头，其具有向壳体内部的排放口的燃料室，由此所述塞子用作加速泵。

4. 发明授权

US4381663A Fluid oscillation materials testing apparatus and methods 失效
标题翻译：流体振荡材料试验装置及方法
公开(公告)号：US4381663A
公开(公告)日：1983-05-03
申请号：US241078
申请日：1981-03-06
申请人： Wilbur M. Swanson
发明人： Wilbur M. Swanson
IPC分类号： G01N3/36
CPC分类号： G01N3/36 , G01N2203/0042
摘要： Apparatus and methods for durability (fatigue) testing of various samples (materials, valves, components and other objects) involves use of a test fixture for clamping a sample to be tested in a closed fluid environment and providing fluid passages on opposite sides of the object to be tested through which a bellows-actuated fluid oscillator causes axial oscillating flow of fluid, causing the sample to undergo repeated bidirectional axial pressures producing flexing in the case of a membrane of elastic material or repeated closing and opening in the case of a valve, etc., in response to oscillation of the fluid in the passages. The device is particularly suited for "blister testing" of elastomers and for life testing of prosthetic heart valves and other valves.
摘要翻译：各种样品（材料，阀门，部件和其他物体）的耐久性（疲劳）测试的装置和方法涉及使用测试夹具将待测试的样品夹紧在封闭的流体环境中，并在物体的相对侧上提供流体通道经波纹管致动的流体振荡器引起流体的轴向振荡流动，导致样品经历重复的双向轴向压力，在弹性材料的膜的情况下产生弯曲，或者在阀的情况下重复关闭和打开，等等，响应于通道中的流体的振荡。该装置特别适用于弹性体的“水泡测试”和人造心脏瓣膜和其他阀门的寿命测试。

5. 发明授权

US4546642A Accelerated heart valve testing apparatus and methods 失效
标题翻译：加速心脏瓣膜检查仪器及方法
公开(公告)号：US4546642A
公开(公告)日：1985-10-15
申请号：US641870
申请日：1984-08-17
申请人： Wilbur M. Swanson
发明人： Wilbur M. Swanson
IPC分类号： A61F2/24 , F16K37/00 , G01N3/36
CPC分类号： A61F2/2472 , F16K37/0091
摘要： Apparatus and methods for durability (fatigue) testing of prosthetic heart valves or other check valves. The apparatus is circular in plan and includes a test fixture in which the valves are circularly arranged, located with communicating passages, such passages communicating with bellows closed at one end. The bellows are carried by a swash plate journalled to a motor by a coupling providing an adjustable tilt axis. The tilt axis determines the amplitude of the motion or flow of the fluid, as the bellows alternately expand and contract. A central bypass chamber includes orifices which are selectively varied in effective cross section to control an amount of the test fluid which bypasses the test samples, thereby determining fluid pressure differential across the sample valves. Fluid in the apparatus can be heated by an electric heater to temperatures similar to human blood, a temperature probe monitoring the temperature for its control. A pressure tap monitors the fluid pressure for shutting down the apparatus if abnormal pressures or leaks are developed. Several prosthetic heart valves, e.g., two, four, six, eight, etc., are held by the fixture at the same time for life testing at relatively high cyclic rates.
摘要翻译：假体心脏瓣膜或其他止回阀的耐久性（疲劳）试验的装置和方法。该装置是平面圆形的，并且包括测试夹具，其中阀是圆形布置的，定位在连通通道中，这样的通道与一端封闭的波纹管连通。波纹管由旋转斜盘承载，通过耦合提供可调节的倾斜轴，轴颈连接到电机。当倾斜轴交替膨胀和收缩时，倾斜轴确定流体的运动或流动的幅度。中央旁路室包括有选择地在有效横截面上变化的孔，以控制绕过测试样品的测试流体的量，从而确定跨过样品阀的流体压力差。设备中的流体可以通过电加热器加热到类似于人血的温度，温度探针监测其控制温度。如果发生异常压力或泄漏，压力分接头监测流体压力以关闭设备。几个假体心脏瓣膜，例如两个，四个，六个，八个等，同时由固定装置保持在相对高的循环速率下进行寿命测试。

6. 发明授权

US4280969A Carburetor 失效
标题翻译：化油器
公开(公告)号：US4280969A
公开(公告)日：1981-07-28
申请号：US960466
申请日：1978-11-13
申请人： Wilbur M. Swanson
发明人： Wilbur M. Swanson
IPC分类号： F02M9/10 , F02M9/133 , F02M19/02 , F02M19/08 , F02M9/04
CPC分类号： F02M9/133 , F02M19/0217 , F02M19/081 , F02M9/103 , Y10S261/56 , Y10S261/78
摘要： A carburetor which comprises a casing, an air inlet at the upper end thereof and an air-fuel mixture discharge at the lower end thereof, with a venturi throat located downwardly of said inlet, a sonic throat below said venturi throat, and a diffuser section interconnecting the sonic throat and the discharge. Portions of the wall of the sonic throat are provided with a plurality of indentations, projections, or surface irregularities for stabilizing the flow therethrough and conducing to the uniformity of the air-fuel mixture. At least one portion of said sonic throat is movable with respect to the fixed portions of said throat for altering the cross-section thereof responsive to fuel requirements for combustion.
摘要翻译：一种化油器，包括壳体，其上端处的空气入口和其下端处的空气 - 燃料混合物排出口，位于所述入口下方的文丘里喉部，在所述文丘里喉部下方的声音喉部，以及扩散器部分连接声音喉咙和放电。声音喉部的壁的一些部分设置有多个凹口，突起或表面凹凸，用于稳定其中的流动并促进空气 - 燃料混合物的均匀性。所述声音喉部的至少一部分可相对于所述喉部的固定部分移动，以响应于燃烧的燃料需求而改变其横截面。

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