公开(公告)号：US09393433B2

公开(公告)日：2016-07-19

申请号：US13489770

申请日：2012-06-06

Applicant: Jordi Parramon ,  Goran N. Marnfeldt ,  Robert Ozawa ,  Emanuel Feldman ,  Dave Peterson

Inventor： Jordi Parramon ,  Goran N. Marnfeldt ,  Robert Ozawa ,  Emanuel Feldman ,  Dave Peterson ,  Yuping He

IPC: A61N1/378 ,  A61N1/08

CPC classification number: A61N1/3787 ,  A61N1/08

Abstract: Battery management circuitry for an implantable medical device such as an implantable neurostimulator is described. The circuitry has a T-shape with respect to the battery terminal, with charging circuitry coupled between rectifier circuitry and the battery terminal on one side of the T, and load isolation circuitry coupled between the load and the battery terminal on the other side. The load isolation circuitry can comprise two switches wired in parallel. An undervoltage fault condition opens both switches to isolate the battery terminal from the load to prevent further dissipation of the battery. Other fault conditions will open only one the switches leaving the other closed to allow for reduced power to the load to continue implant operations albeit at safer low-power levels. The battery management circuitry can be fixed in a particular location on an integrated circuit which also includes for example the stimulation circuitry for the electrodes.

Abstract translation: 描述了诸如可植入神经刺激器的可植入医疗装置的电池管理电路。 电路相对于电池端子具有T形，充电电路耦合在整流器电路和T的一侧上的电池端子之间，负载隔离电路耦合在另一侧的负载和电池端子之间。 负载隔离电路可以包括并联的两个开关。 欠压故障条件打开两个开关以将电池端子与负载隔离，以防止电池进一步耗散。 其他故障条件将仅打开一个开关，使另一个闭合，以允许降低负载的功率，以继续进行种植体操作，尽管处于更安全的低功率水平。 电池管理电路可以固定在集成电路的特定位置，该集成电路还包括例如用于电极的刺激电路。

公开(公告)号：US08666504B2

公开(公告)日：2014-03-04

申请号：US13608490

申请日：2012-09-10

Applicant: Vasily Dronov ,  Jordi Parramon ,  Robert Ozawa ,  Md. Mizanur Rahman ,  Emanuel Feldman

Inventor： Vasily Dronov ,  Jordi Parramon ,  Robert Ozawa ,  Md. Mizanur Rahman ,  Emanuel Feldman

IPC: A61N1/05

CPC classification number: H01F38/14 ,  A61N1/36 ,  A61N1/37223 ,  A61N1/3787 ,  H02J50/12 ,  H04Q9/12

Abstract: Communication and charging circuitry for an implantable medical device is described having a single coil for receiving charging energy and for data telemetry. The circuitry removes from the AC side of the circuit a tuning capacitor and switch traditionally used to tune the tank circuitry to different frequencies for telemetry and charging. As such, the tank circuitry is simplified and contains no switchable components. A switch is serially connected to the storage capacitor on the DC side of the circuit. During telemetry, the switch is opened, thus disconnecting the storage capacitor from the tank circuit, and alleviating concerns that this capacitor will couple to the tank circuit and interfere with telemetry operations. During charging, the switch is closed, which allows the storage capacitor to couple to the tank circuitry through the rectifier during some portions of the tank circuitry's resonance.

Abstract translation: 描述了用于可植入医疗装置的通信和充电电路，其具有用于接收充电能量和用于数据遥测的单个线圈。 该电路从电路的AC侧消除了调谐电容器和传统上用于将电路调谐到不同频率的开关，用于遥测和充电。 因此，容器电路被简化并且不包含可切换的部件。 开关串联连接到电路直流侧的存储电容器。 在遥测期间，开关打开，从而将存储电容器与储能电路断开，并减轻该电容器将耦合到储能电路并干扰遥测操作的担忧。 在充电期间，开关闭合，这允许存储电容器在储罐电路的共振的某些部分期间通过整流器耦合到储能电路。

公开(公告)号：US20130103115A1

公开(公告)日：2013-04-25

申请号：US13608490

申请日：2012-09-10

Applicant: Vasily Dronov ,  Jordi Parramon ,  Robert Ozawa ,  Md. Mizanur Rahman ,  Emanuel Feldman

Inventor： Vasily Dronov ,  Jordi Parramon ,  Robert Ozawa ,  Md. Mizanur Rahman ,  Emanuel Feldman

IPC: A61N1/08

CPC classification number: H01F38/14 ,  A61N1/36 ,  A61N1/37223 ,  A61N1/3787 ,  H02J50/12 ,  H04Q9/12

Abstract: Communication and charging circuitry for an implantable medical device is described having a single coil for receiving charging energy and for data telemetry. The circuitry removes from the AC side of the circuit a tuning capacitor and switch traditionally used to tune the tank circuitry to different frequencies for telemetry and charging. As such, the tank circuitry is simplified and contains no switchable components. A switch is serially connected to the storage capacitor on the DC side of the circuit. During telemetry, the switch is opened, thus disconnecting the storage capacitor from the tank circuit, and alleviating concerns that this capacitor will couple to the tank circuit and interfere with telemetry operations. During charging, the switch is closed, which allows the storage capacitor to couple to the tank circuitry through the rectifier during some portions of the tank circuitry's resonance.

Abstract translation: 描述了用于可植入医疗装置的通信和充电电路，其具有用于接收充电能量和用于数据遥测的单个线圈。 该电路从电路的AC侧消除了调谐电容器和传统上用于将电路调谐到不同频率的开关，用于遥测和充电。 因此，容器电路被简化并且不包含可切换的部件。 开关串联连接到电路直流侧的存储电容器。 在遥测期间，开关打开，从而将存储电容器与储能电路断开，并减轻该电容器将耦合到储能电路并干扰遥测操作的担忧。 在充电期间，开关闭合，这允许存储电容器在储罐电路的共振的某些部分期间通过整流器耦合到储能电路。

公开(公告)号：US20130096651A1

公开(公告)日：2013-04-18

申请号：US13608600

申请日：2012-09-10

Applicant: Robert Ozawa ,  Daniel Aghassian

Inventor： Robert Ozawa ,  Daniel Aghassian

IPC: A61N1/378

CPC classification number: A61N1/3787 ,  A61F2250/0001 ,  A61N1/08 ,  A61N1/37252 ,  H02J5/005 ,  H02J7/025

Abstract: The disclosed means of determining alignment between an external charger and an implantable medical device (IMD) involves the use of reflected impedance modulation, i.e., by measuring at the external charger reflections arising from modulating the impedance of the charging coil in the IMD. During charging, the charging coil in the IMD is pulsed to modulate its impedance. The difference in the coil voltage (ΔV) produced at the external charger as a result of these pulses is assessed and is used by the external charger to indicate coupling. If the magnitude of ΔV is above a threshold, the external charger considers the coupling to the IMD to be adequate, and an alignment indicator in the external charger is controlled accordingly. The magnitude of Vcoil can be assessed in addition to ΔV to determine alignment with the IMD with improved precision, and/or to further define a high quality alignment condition.

Abstract translation: 所公开的确定外部充电器和可植入医疗装置（IMD）之间的对准的方法涉及反射阻抗调制的使用，即通过在调制IMD中的充电线圈的阻抗而产生的外部充电器反射下测量。 在充电期间，IMD中的充电线圈被脉冲调制其阻抗。 评估由外部充电器产生的线圈电压（DeltaV）与这些脉冲之间的差异，并由外部充电器用于指示耦合。 如果DeltaV的大小超过阈值，外部充电器认为与IMD的耦合足够，并且相应地控制外部充电器中的对准指示器。 除了DeltaV之外，还可以评估Vcoil的幅度，以确定与IMD的精确对准，和/或进一步确定高质量的对准条件。

公开(公告)号：US20120004709A1

公开(公告)日：2012-01-05

申请号：US13164005

申请日：2011-06-20

Applicant: Joey Chen ,  Robert Ozawa ,  Joonho Hyun ,  Vasily Dronov

Inventor： Joey Chen ,  Robert Ozawa ,  Joonho Hyun ,  Vasily Dronov

IPC: A61N1/36

CPC classification number: A61N1/37223 ,  A61N1/3787 ,  H01Q1/273 ,  H01Q9/42

Abstract: A base station for passively recharging a battery in an implant without patient involvement is disclosed. The base station can be hand held or may comprise equipment configured to be placed at a fixed location, such as under a bed, on or next to a wall, etc. The base station can generate electric and magnetic fields (E-field and B-field) that couple with an antenna and a receiving coil within the implant to generate a charging current for charging the implant's battery. No handling or manipulation on part of the patient is necessary; the implant battery is passively charged whenever the patient is within range of either the magnetic or electric charging fields generated by base station. Charging using the B-field occurs when the IPG is at a relatively short distance from the base station, while charging using the E-field occurs at longer distances. Back telemetry from the implant can inform the base station whether B-field or E-field charging is indicated, and is preferred if possible for its ability to transfer higher amounts of power to the implant.

Abstract translation: 公开了一种用于对植入物中的电池进行无源再充电的基站，无需患者参与。 基站可以是手持的，或者可以包括被配置为放置在固定位置的设备，例如在床下面，在墙壁上或墙壁上等。基站可以产生电场和磁场（E场和B 场），其与植入物内的天线和接收线圈耦合，以产生用于对植入物的电池充电的充电电流。 不需要对部分患者进行处理或手术; 每当患者处于由基站产生的磁性或电荷充电场的范围内时，植入物电池被动地充电。 当IPG距离基站相对较短的距离时，使用B场进行充电，而使用电场进行充电会发生较长的距离。 来自植入物的反向遥测可以通知基站是否指示B场或E场充电，并且如果可能的话将其更大量的功率传送给植入物是优选的。

公开(公告)号：US20110234155A1

公开(公告)日：2011-09-29

申请号：US13040945

申请日：2011-03-04

Applicant: Joey Chen ,  Robert Ozawa ,  Daniel Aghassian

Inventor： Joey Chen ,  Robert Ozawa ,  Daniel Aghassian

IPC: H02J7/00

CPC classification number: A61N1/3758 ,  A61N1/3787 ,  H01F27/365 ,  H01F38/14 ,  H02J7/025 ,  H02J50/10 ,  H02J50/70

Abstract: To recharge an implanted medical device, an external device, typically in the form of an inductive charger, is placed over the implant to provide for transcutaneous energy transfer. The external charging device can be powered by a rechargeable battery. Since the battery is in close proximity to the charge coil, the large magnetic field produced by the charge coil induces eddy currents that flow on the battery's metallic case, often resulting in undesirable heating of the battery and reduced efficiency of the charger. This disclosure provides a means of shielding the battery from the magnetic field to reduce eddy current heating, thereby increasing efficiency. In one embodiment, the magnetic shield consists of one or more thin ferrite plates. The use of a ferrite shield allows the battery to be placed directly over the charge coil as opposed to outside the extent of the charge coil.

Abstract translation: 为了对植入的医疗装置充电，通常以感应充电器的形式的外部装置放置在植入物上以提供经皮能量转移。 外部充电装置可以由可充电电池供电。 由于电池靠近充电线圈，由充电线圈产生的大磁场引起在电池金属壳体上流动的涡流，经常导致电池的不期望的加热并降低充电器的效率。 本公开提供了一种屏蔽电池免受磁场的影响，以减少涡流加热，从而提高效率。 在一个实施例中，磁屏蔽由一个或多个薄铁氧体板组成。 铁氧体屏蔽的使用允许电池直接放置在充电线圈上方，而不是在充电线圈的范围之外。

公开(公告)号：US20110087307A1

公开(公告)日：2011-04-14

申请号：US12575733

申请日：2009-10-08

Applicant: Rafael Carbunaru ,  Jordi Parramon ,  Robert Ozawa ,  Jess Shi ,  Joey Chen ,  Md. Mizanur Rahman

Inventor： Rafael Carbunaru ,  Jordi Parramon ,  Robert Ozawa ,  Jess Shi ,  Joey Chen ,  Md. Mizanur Rahman

IPC: A61N1/378

CPC classification number: A61N1/3787 ,  A61N1/3605 ,  A61N1/37205 ,  A61N1/37217

Abstract: An improved external charger for a battery in an implantable medical device (implant), and technique for charging the battery using such improved external charger, is disclosed. In one example, simulation data is used to model the power dissipation of the charging circuitry in the implant at varying levels of implant power. A power dissipation limit is chosen to constrain the charging circuitry from producing an inordinate amount of heat to the tissue surrounding the implant, and duty cycles are determined for the various levels of input intensities to ensure that the power limit is not exceeded. A maximum simulated average battery current determines the optimal (i.e., quickest) battery charging current, and at least an optimal value for a parameter indicative of that current, for example, the voltage across the battery charging circuitry, is determined and stored in the external charger. During charging, the actual value for that parameter is reported from the implant to the external charger, which in turn adjusts the intensity and/or duty cycle of the magnetic charging field consistent with the simulation to ensure that charging is as fast as possible, while still not exceeding the power dissipation limit.

Abstract translation: 公开了用于可植入医疗装置（植入物）中的电池的改进的外部充电器以及使用这种改进的外部充电器对电池充电的技术。 在一个示例中，模拟数据用于以不同的植入功率水平对植入物中的充电电路的功率耗散进行建模。 选择功率耗散极限以限制充电电路对植入物周围的组织产生过量的热量，并且针对各种输入强度级别确定占空比以确保不超过功率限制。 最大模拟平均电池电流确定最佳（即最快）电池充电电流，并且至少确定表示该电流的参数（例如，电池充电电路两端的电压）的最佳值，并将其存储在外部 充电器。 在充电期间，该参数的实际值从注入到外部充电器报告，外部充电器依次调整充电场的强度和/或占空比，与模拟一致，以确保充电尽可能快，同时 仍然不超过功耗限制。

公开(公告)号：US09314642B2

公开(公告)日：2016-04-19

申请号：US13608666

申请日：2012-09-10

Applicant: Robert Ozawa ,  Daniel Aghassian

Inventor： Robert Ozawa ,  Daniel Aghassian

IPC: A61N1/37 ,  A61N1/378 ,  A61N1/372

CPC classification number: A61N1/3787 ,  A61N1/37252

Abstract: The disclosed system for providing closed loop charging between an external charger and an implantable medical device such as an IPG involves the use of reflected impedance modulation, i.e., by measuring at the external charger reflections arising from modulating the impedance of the charging coil in the IPG. During charging, the charging coil in the IPG is periodically pulsed to modulate its impedance. The magnitude of the change in the coil voltage produced at the external charger ΔV as a result of these pulses is assessed and is used by the controller circuitry in the external charger as indicative of the coupling between the external charger and the IPG. The external charger adjusts its output power (e.g., Icharge) in accordance with the magnitude of ΔV, thus achieving closed loop charging without the need of telemetering coupling parameters from the IPG.

Abstract translation: 所公开的用于在外部充电器和诸如IPG的可植入医疗设备之间提供闭环充电的系统涉及使用反射阻抗调制，即通过在外部充电器处测量在IPG中调制充电线圈的阻抗而产生的反射 。 在充电期间，IPG中的充电线圈被周期性地脉冲以调制其阻抗。 由外部充电器的外部充电器和外部充电器之间的耦合指示外部充电器的电压产生的线圈电压的变化幅度被评估并由外部充电器中的控制器电路使用。 外部充电器根据Dgr V的大小调节其输出功率（例如Icharge），从而实现闭环充电，而不需要来自IPG的遥测耦合参数。

公开(公告)号：US09044616B2

公开(公告)日：2015-06-02

申请号：US13164005

申请日：2011-06-20

Applicant: Joey Chen ,  Robert Ozawa ,  Joonho Hyun ,  Vasily Dronov

Inventor： Joey Chen ,  Robert Ozawa ,  Joonho Hyun ,  Vasily Dronov

IPC: A61N1/36 ,  A61N1/378 ,  H01Q1/27 ,  H01Q9/42 ,  A61N1/372

CPC classification number: A61N1/37223 ,  A61N1/3787 ,  H01Q1/273 ,  H01Q9/42

Abstract: A base station for passively recharging a battery in an implant without patient involvement is disclosed. The base station can be hand held or may comprise equipment configured to be placed at a fixed location, such as under a bed, on or next to a wall, etc. The base station can generate electric and magnetic fields (E-field and B-field) that couple with an antenna and a receiving coil within the implant to generate a charging current for charging the implant's battery. No handling or manipulation on part of the patient is necessary; the implant battery is passively charged whenever the patient is within range of either the magnetic or electric charging fields generated by base station. Charging using the B-field occurs when the IPG is at a relatively short distance from the base station, while charging using the E-field occurs at longer distances. Back telemetry from the implant can inform the base station whether B-field or E-field charging is indicated, and is preferred if possible for its ability to transfer higher amounts of power to the implant.

Abstract translation: 公开了一种用于对植入物中的电池进行无源再充电的基站，无需患者参与。 基站可以是手持的，或者可以包括被配置为放置在固定位置的设备，例如在床下面，在墙壁上或墙壁上等。基站可以产生电场和磁场（E场和B 场），其与植入物内的天线和接收线圈耦合，以产生用于对植入物的电池充电的充电电流。 不需要对部分患者进行处理或手术; 每当患者处于由基站产生的磁性或电荷充电场的范围内时，植入物电池被动地充电。 当IPG距离基站相对较短的距离时，使用B场进行充电，而使用电场进行充电会发生较长的距离。 来自植入物的反向遥测可以通知基站是否指示B场或E场充电，并且如果可能的话将其更大量的功率传送给植入物是优选的。

公开(公告)号：US08744592B2

公开(公告)日：2014-06-03

申请号：US12575733

申请日：2009-10-08

Applicant: Rafael Carbunaru ,  Jordi Parramon ,  Robert Ozawa ,  Jess Shi ,  Joey Chen ,  Md. Mizanur Rahman

Inventor： Rafael Carbunaru ,  Jordi Parramon ,  Robert Ozawa ,  Jess Shi ,  Joey Chen ,  Md. Mizanur Rahman

IPC: A61N1/00 ,  H02J7/00 ,  A61N1/378 ,  A61N1/372 ,  A61N1/36

CPC classification number: A61N1/3787 ,  A61N1/3605 ,  A61N1/37205 ,  A61N1/37217

Abstract: An improved external charger for a battery in an implantable medical device (implant), and technique for charging the battery using such improved external charger, is disclosed. In one example, simulation data is used to model the power dissipation of the charging circuitry in the implant at varying levels of implant power. A power dissipation limit is chosen to constrain the charging circuitry from producing an inordinate amount of heat to the tissue surrounding the implant, and duty cycles are determined for the various levels of input intensities to ensure that the power limit is not exceeded. A maximum simulated average battery current determines the optimal (i.e., quickest) battery charging current, and at least an optimal value for a parameter indicative of that current, for example, the voltage across the battery charging circuitry, is determined and stored in the external charger. During charging, the actual value for that parameter is reported from the implant to the external charger, which in turn adjusts the intensity and/or duty cycle of the magnetic charging field consistent with the simulation to ensure that charging is as fast as possible, while still not exceeding the power dissipation limit.

Abstract translation: 公开了用于可植入医疗装置（植入物）中的电池的改进的外部充电器以及使用这种改进的外部充电器对电池充电的技术。 在一个示例中，模拟数据用于以不同的植入功率水平对植入物中的充电电路的功率耗散进行建模。 选择功率耗散极限以限制充电电路对植入物周围的组织产生过量的热量，并且针对各种输入强度级别确定占空比以确保不超过功率限制。 最大模拟平均电池电流确定最佳（即最快）电池充电电流，并且至少确定表示该电流的参数（例如，电池充电电路两端的电压）的最佳值，并将其存储在外部 充电器。 在充电期间，该参数的实际值从注入到外部充电器报告，外部充电器依次调整充电场的强度和/或占空比，与模拟一致，以确保充电尽可能快，同时 仍然不超过功耗限制。