-
公开(公告)号：US4587970A
公开(公告)日：1986-05-13
申请号：US693592
申请日：1985-01-22
申请人： Loraine K. Holley , Robert Evans
发明人： Loraine K. Holley , Robert Evans
CPC分类号： A61N1/3622
摘要： There is disclosed a tachycardia control pacer in which there is generated a sequence of pacing pulses at intervals which are a function of the effective refractory period intrinsically associated with the rate of the patient heartbeats. If the tachycardia episode is not terminated, another sequence of pulses is generated; however, the rate of the new sequence is decreased if at least one unevoked heartbeat was sensed during the preceding pacing pulse sequence and the rate is increased in the absence of any unevoked heartbeat having been sensed during the preceding pacing pulses sequence. Also, in order to smooth the transition between the fast pulses used to terminate the tachycardia episode and subsequent beating in sinus rhythm, pacing pulses continue to be generated at increasing pacing intervals until they merge into standby pacing.
摘要翻译： 公开了一种心动过速控制起搏器，其中间隔地产生起搏脉冲序列，其是与病人心跳速率固有相关的有效不应期的函数。 如果心动过速发作没有终止，则产生另一个脉冲序列; 然而，如果在先前的起搏脉冲序列期间感测到至少一个未发作的心跳，并且在前一步骤起搏脉冲序列期间没有感测到任何未发生心跳的情况下增加速率，则新序列的速率将降低。 此外，为了平滑用于终止心动过速的快速脉冲之间的过渡以及随后在窦性心律中的跳动，起搏脉冲将继续以增加的起搏间隔产生，直到它们并入待机起搏。
-
公开(公告)号：US4938231A
公开(公告)日：1990-07-03
申请号：US274669
申请日：1988-11-21
IPC分类号： A61N1/05
CPC分类号： A61N1/0587
摘要： A patch-type defibrillator electrode for direct contact with the heart has a thin, flat, flexible generally circular mesh or foil conductive member with a pattern of slits for enabling continuous contact with the three dimensional, time-varying heart surface topography. The slit pattern includes two pairs of non-intersecting semicircular slits oriented along mutually perpendicular axes, and interior portions of the conductive member are flexibly movable in a direction normal to the plane member and are flexibly tiltable about the axes to provide the conforming contact. The slits may also be radial slits which do not meet at the center so the leaves of conductive members are independently mobile with respect to every other leaf. A Dacron envelope having a thrombus formation inhibiting agent surrounds the conductive member including the peripheral edges to reduce the risk of tissue burning from current supplied to the center of the conductive member by an electrode lead.
摘要翻译： 用于与心脏直接接触的贴片式除颤器电极具有薄的，平坦的，柔性的大致圆形网状物或箔导电构件，其具有用于能够与三维，时变心脏表面形貌连续接触的狭缝图案。 狭缝图案包括沿着相互垂直的轴定向的两对不相交的半圆形狭缝，并且导电构件的内部可以在垂直于平面构件的方向上挠曲地移动，并且能够围绕轴线灵活地倾斜以提供顺应接触。 狭缝也可以是不在中心处相遇的径向狭缝，因此导电构件的叶片相对于每隔一个叶片独立地移动。 具有血栓形成抑制剂的涤纶包膜围绕包括周缘的导电构件，以通过电极引线降低由导电构件的中心供应的电流的组织燃烧的风险。
-
公开(公告)号：US4798206A
公开(公告)日：1989-01-17
申请号：US923875
申请日：1986-10-28
申请人： David S. Maddison , Michael Skalsky , Zoran Milijasevic , Stephen G. Perry , Loraine K. Holley , Gerhard R. Gotthardt , Garry T. Richardson
发明人： David S. Maddison , Michael Skalsky , Zoran Milijasevic , Stephen G. Perry , Loraine K. Holley , Gerhard R. Gotthardt , Garry T. Richardson
CPC分类号： A61N1/36542 , A61N1/056 , A61N1/375 , A61N1/3785
摘要： Self-contained, self-powered, flexible electrical control signal generating means are located in the right ventricle of a heart and generate electrical control signals solely by mechanical movements caused by actions of and conditions in the heart without any electrical connection to and supply of electrical energy from any other power source which electric control signals are transmitted to a control circuit system of an implanted control unit which control unit transmits an electrical signal to a stimulation electrode implanted in tissue at the apex of the right ventricle of the heart which stimulation electrode uses the electrical signal to stimulate the heart.
摘要翻译： 独立的，自供电的，灵活的电气控制信号发生装置位于心脏的右心室，并且仅通过由心脏的动作和状况引起的机械运动产生电控制信号，而没有电气连接和供应电 来自任何其他电源的能量将电控制信号传输到植入的控制单元的控制电路系统，该控制单元将控制单元向植入在心脏右心室顶点的组织中的刺激电极发送电信号，刺激电极刺激电极使用 电信号刺激心脏。
-
公开(公告)号：US4337776A
公开(公告)日：1982-07-06
申请号：US182820
申请日：1980-08-29
CPC分类号： A61N1/3706 , A61N2001/083
摘要： A pacer which facilitates the measurements of both electrode impedance and stimulation threshold. When activated by an external magnet, a sequence of reducing-amplitude stimulating pulses is generated, with successive pulses in the sequence being separated by full-amplitude pulses. This pulse alternation scheme allows long test sequences, and therefore measurements with greater resolution, because full-amplitude pacing pulses are always present (even though at a slightly reduced rate). The reduction in amplitude of successive pulses is determined by the electrode impedance rather than being predetermined, and thus the examination of a skin potential recording allows electrode impedance to be determined along with the capture threshold.
摘要翻译： 一种便于测量电极阻抗和刺激阈值的起搏器。 当由外部磁体激活时，产生减小幅度刺激脉冲序列，序列中的连续脉冲被全幅脉冲分开。 这种脉冲交替方案允许长的测试序列，因此具有更高分辨率的测量，因为全幅度起搏脉冲总是存在（即使以稍微降低的速率）。 连续脉冲的振幅的减小由电极阻抗而不是预先确定，因此对皮肤电位记录的检查允许电极阻抗与捕获阈值一起确定。
-
公开(公告)号：US4408604A
公开(公告)日：1983-10-11
申请号：US251708
申请日：1981-04-06
申请人： Michael S. Hirshorn , Michael Skalsky , Petrus A. van Berkum , Loraine K. Holley , David K. Money
发明人： Michael S. Hirshorn , Michael Skalsky , Petrus A. van Berkum , Loraine K. Holley , David K. Money
CPC分类号： A61N1/0565
摘要： A porous cardiac pacemaker electrode comprising a concavo-convex electrode cap having a plurality of apertures therethrough and an electrode shaft having a supporting edge formed thereon to which the concave surface of the electrode cap is joined. The porous cardiac pacemaker electrode is produced by deforming a platinum plate into a concavo-convex shaped cap member, forming a plurality of selectively spaced apertures through the electrode cap member to make the electrode cap substantially porous, forming an electrode shaft having a supporting edge, and joining the supporting edge of the electrode shaft to the concave surface of the electrode cap member.
摘要翻译： 一种多孔心脏起搏器电极，包括具有穿过其中的多个孔的凹凸电极帽和形成有所述电极帽的凹面的所述支撑边缘的电极轴。 多孔心脏起搏器电极通过将铂板变形成凹凸形的帽构件而制成，通过电极帽构件形成多个选择性间隔的孔，以使电极帽基本上是多孔的，形成具有支撑边缘的电极轴， 并且将电极轴的支撑边缘连接到电极帽构件的凹面。
-
公开(公告)号：US4407302A
公开(公告)日：1983-10-04
申请号：US251340
申请日：1981-04-06
CPC分类号： A61N1/0565
摘要： A cardiac pacemaker electrode including an electrode tip having an external surface with a concave region formed therein to increase the pacing impedance thereof. Further, the external surface of the electrode tip is roughened, for example by abrading with a jet of glass beads projected under pressure, to increase the microsurface area of the electrode tip and to reduce the sensing impedance thereof.
摘要翻译： 一种心脏起搏器电极，包括具有形成在其中的具有凹区域的外表面的电极尖端以增加其起搏阻抗。 此外，电极末端的外表面被粗糙化，例如通过在压力下投射的玻璃珠的射流进行研磨，以增加电极尖端的微表面积并减小其感测阻抗。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.016 秒)
