公开(公告)号：US4909710A

公开(公告)日：1990-03-20

申请号：US425473

申请日：1989-10-23

申请人： David E. Kaplan ,  David Burkett ,  Laurence Warden

发明人： David E. Kaplan ,  David Burkett ,  Laurence Warden

IPC分类号： F04B43/08

CPC分类号： A61M5/14228 ,  F04B43/082

摘要： A linear peristaltic pump equipped with a pressure relief mechanism for pumping I.V. fluids to a patient comprises a platen for supporting the tube, and a plurality of fingers which sequentially urge against the tube resting against the platen for creating a moving zone of occlusion. Cam lobes are formed to lift a penultimate and ultimate finger off of the tube at a rate faster than the other fingers to prevent pressure increases inside the tube which would otherwise be caused by other fingers urging against the tube. Additionally, the ultimate finger may be shortened with respect to the other fingers to reduce the total occlusion time of the ultimate finger to provide a more linearized flow of fluid to the patient.

摘要翻译： 线性蠕动泵配备有压力释放机构，用于泵送I.V。 流体到患者包括用于支撑管的压板，以及多个指状物，其顺序地推靠着靠在压盘上的管子，以产生移动的闭塞区域。 凸轮凸角被形成为以比其他手指更快的速率将倒数第二个和最终的手指从管中提起，以防止管内的压力增加，否则其他手指会推压在管上。 另外，最终手指可能相对于其他手指缩短，以减少最终手指的完全闭塞时间，以向患者提供更线性化的流体流。

公开(公告)号：USD409758S

公开(公告)日：1999-05-11

申请号：US82078

申请日：1998-01-14

申请人： Laurence Warden ,  David E. Kaplan

设计人： Laurence Warden ,  David E. Kaplan

公开(公告)号：US6016712A

公开(公告)日：2000-01-25

申请号：US933443

申请日：1997-09-18

申请人： Laurence Warden ,  David E. Kaplan

发明人： Laurence Warden ,  David E. Kaplan

IPC分类号： G01N33/48 ,  G01N1/00 ,  G01N33/49 ,  G01L3/02

CPC分类号： G01N35/1079 ,  G01N33/4905

摘要： The present invention concerns devices for receiving and processing a sample. The device comprises a sample receiving element adapted to establish fluid communication with and receive a sample directly from a sample container. The sample receiving element also allows for introduction of a sample into the device. A first chamber is in fluid communication with the sample receiving element. One or more second chambers are in fluid communication with the first chamber. The device also comprises first and second ports. The first port provides for venting the device. The second port provides for establishing communication between the device and means for moving the sample from the sample receiving element to the first chamber and for moving the sample from the first chamber to the one or more second chambers. Also included as part of the device is means for controlling the precise amount of the sample introduced into each of the second chambers. The first chamber and/or one or more of the second chambers are adapted for processing the sample. Also disclosed are kits containing the above devices and methods of using the devices to process a sample.

摘要翻译： 本发明涉及用于接收和处理样品的设备。 该装置包括适于与样品容器直接建立流体连通并接收样品的样品接收元件。 样品接收元件还允许将样品引入到装置中。 第一室与样品接收元件流体连通。 一个或多个第二腔室与第一腔室流体连通。 该装置还包括第一和第二端口。 第一个端口用于排放设备。 第二端口用于建立装置与用于将样品从样品接收元件移动到第一室的装置之间的连通并且用于将样品从第一室移动到一个或多个第二室。 还包括作为装置的一部分的装置是用于控制引入每个第二室的样品的精确量的装置。 第一室和/或一个或多个第二室适于处理样品。 还公开了包含上述装置和使用装置处理样品的方法的试剂盒。

公开(公告)号：US4954046A

公开(公告)日：1990-09-04

申请号：US447880

申请日：1989-12-08

申请人： Ronald D. Irvin ,  David Burkett ,  David E. Kaplan ,  Ronald J. Harvey

发明人： Ronald D. Irvin ,  David Burkett ,  David E. Kaplan ,  Ronald J. Harvey

IPC分类号： F04B43/12 ,  A61M1/10 ,  A61M5/142 ,  F04B43/08

CPC分类号： A61M5/14228 ,  F04B43/082 ,  Y10S128/12

摘要： A linear peristaltic pump includes a mechanism for maintaining linear flow of fluid through an I.V. tube. The mechanism comprises a casing carrying a rotatable camshaft having a plurality of cams spaced therealong in helical arrangement and a plurality of fingers coupled to the camshaft. A housing for establishing linear reciprocal movement of the fingers in response to rotation of the shaft establishes a moving zone of occlusion along a tube held against the fingers. Aligning means are included for establishing an axis of rotation of the camshaft which is slightly tilted with respect to the tube. This is accomplished by raising or lowering the upstream or the downstream end of the camshaft to prevent unwanted pressure from building up in the tube to reduce pulsatile flow and maintain linear flow. The aligning mechanism comprises a generally cylindrical bushing having an eccentric hole therethrough for carrying the hinged connection between the casing and the housing. The bushing has a slot therethrough for adjustably rotating the bushing for adjusting the amount of tilt. The adjustment can take place during operation of the pump, having a pressure sensor against the tube, to achieve the optimal positioning of the camshaft depending on the tolerances of the pump mechanism to establish linear flow of fluid through the tube.

公开(公告)号：US5423746A

公开(公告)日：1995-06-13

申请号：US66679

申请日：1993-05-24

申请人： David H. Burkett ,  David E. Kaplan

发明人： David H. Burkett ,  David E. Kaplan

IPC分类号： A61M5/00 ,  A61M5/168 ,  A61M31/00

CPC分类号： A61M5/16859 ,  Y10S128/12 ,  Y10S128/13

摘要： A method for testing for patency at a venous access site during intravenous infusion of a medical solution includes the steps of occluding an intravenous injection tube upstream from the venous access site and monitoring the time and fluid pressure within the tube while the fluid pressure within the tube is varied by external contact with the tube. An apparatus for practicing the method of the invention includes a housing formed with a tube receiving portion for holding a portion of the tube in contact with an occluder finger, a fluid moving finger and a pressure transducer. The fluid moving finger is adapted to contact the tube so as to achieve a testing base pressure in the fluid, after occlusion by the occluder finger. A sequence of pressure drops are then effected by moving the fluid moving finger in stepped increments. An excessive time interval between a pressure drop and a recovery of fluid pressure back to the testing base pressure is an indication of an infiltration condition or some other obstruction.

摘要翻译： 用于在静脉内输液期间在静脉通路部位进行通气的测定的方法包括以下步骤：在静脉进入部位的上游闭塞静脉注射管，并监测管内的时间和流体压力，同时管内的流体压力 通过与管的外部接触而变化。 用于实施本发明的方法的装置包括：壳体，其形成有用于保持管的一部分与封闭器指状物接触的管接收部分，流体移动指状物和压力传感器。 流体移动指状物适于与管接触，以便在由闭塞器手指闭塞之后实现流体中的测试基础压力。 然后通过以分步增量移动流体移动手指来实现一系列压降。 在压力降和回流到测试基础压力之间的过大的时间间隔是渗透状况或其他障碍物的指示。