公开(公告)号：US4200110A

公开(公告)日：1980-04-29

申请号：US855384

申请日：1977-11-28

申请人： John I. Peterson ,  Seth R. Goldstein

发明人： John I. Peterson ,  Seth R. Goldstein

IPC分类号： A61B5/00 ,  A61B5/145 ,  A61B5/1459 ,  G01N21/64 ,  G01N21/77 ,  G01N21/80 ,  G01N31/22 ,  G01N33/84 ,  G01N21/00

CPC分类号： G01N21/80 ,  A61B5/14539 ,  A61B5/1459 ,  G01N21/7703 ,  G01N31/221

摘要： A fiber optic pH probe suitable to be implanted in tissue for physiological studies is disclosed. The probe includes an ion permeable membrane envelope which encloses the ends of a pair of optical fibers. A pH sensitive dye indicator composition is present within the envelope. The probe operates on the concept of optically detecting the change in color of a pH sensitive dye.

摘要翻译： 公开了一种适于植入用于生理学研究的组织中的光纤pH探针。 探针包括封闭一对光纤的端部的离子可渗透膜包络体。 pH敏感染料指示剂组合物存在于包膜内。 探针的作用是光学检测pH敏感染料的颜色变化的概念。

公开(公告)号：US4053952A

公开(公告)日：1977-10-18

申请号：US786486

申请日：1977-04-08

申请人： Seth R. Goldstein

发明人： Seth R. Goldstein

IPC分类号： A61F2/00 ,  F04B43/09 ,  F04B43/00

CPC分类号： F04B43/09 ,  A61F2/0018 ,  A61F2/004 ,  Y10S128/25

摘要： An electrically controlled magnetic fluid actuated device, which can be used in controlling fluid flow and which has particular utility in controlling this flow from a pressurized reservoir implanted in the body such as might be used for an artificial pancreas, sphincter for bladder control or other orthotic devices in the body of a human, has no freely moving parts and consists of a flow passageway having a portion the cross-section of which may be varied to control and to stop the flow of fluid, such as medicine, from a reservoir in the body to the point where this fluid is needed. A magnetic fluid which surrounds or contacts this portion of the passageway can, according to the presence or lack of a magnetic flux in its vicinity, occlude the passageway or allow it to open so as to control the fluid flow in the flow member.

摘要翻译： 一种电控磁流体致动装置，其可用于控制流体流动，并且其特别用于控制来自植入体内的加压储存器的流动，例如可用于人造胰腺，膀胱控制括约肌或其他矫正器 人体内的装置没有自由移动的部分，并且由流动通道构成，该流动通道的横截面可以被改变以控制流体，例如医药等流体， 身体需要这种液体。 围绕或接触该通道的该部分的磁性流体可以根据其附近的磁通量的存在或不存在来封闭通道或允许其打开以控制流动构件中的流体流动。

公开(公告)号：US4530698A

公开(公告)日：1985-07-23

申请号：US530067

申请日：1983-11-02

申请人： Seth R. Goldstein ,  Robert Jones

发明人： Seth R. Goldstein ,  Robert Jones

IPC分类号： A61F2/958 ,  A61M25/00

CPC分类号： A61M25/1006

摘要： Disclosed is a method for obtaining access to a relatively inaccessible region of a blood vessel for diagnostic or therapeutic purposes in which a primary catheter tube is inserted into the vascular system at an entry point remote from the relatively inaccessible region, the leading end of the tube is worked towards the inaccessible region in a conventional manner and then a secondary catheter tube contained within the primary tube is everted from the leading end of the primary tube to approach more closely to the required region. A catheter assembly for performing the method is also disclosed.

摘要翻译： 公开了一种用于获得进入用于诊断或治疗目的的血管的相对不可接近区域的方法，其中在远离相对不可接近区域的入口点处将主导管插入血管系统中，管的前端 以常规方式朝向不可接近区域加工，然后容纳在主管内的次级导管从主管的前端延伸到更接近所需区域的位置。 还公开了一种用于执行该方法的导管组件。