其构造成评估的技术中的装置包括4个主要部件的印刷电路板（PCB）与电组件，无线电力接收线圈，防液体外壳，和刺激电极。

The main PCB is manufactured on a FR4 material and the thickness is 0.8 mm. The electronics comprises of two main parts—control and power management.

控制部分被集成到一个单一的微控制器PIC16LF1783-其被用于产生电刺激脉冲。两个定时器模块被用于产生刺激脉冲，所述第一定时器组脉冲的频率和所述第二定时器用于接通和关断在预定时间的刺激。通过微控制器的逻辑部产生的脉冲然后通过片上运算放大器放大，并输出到刺激电极。

电源管理电路由3个主要部分组成:带有Avago HSMS282P零偏肖特基二极管的倍压器、带接收线圈的并联LC谐振电路和低降稳压器。一个5.1 V齐纳二极管被放置在整流电压，以保护电容器银行防止由于过电压损坏。经整流的电压通过TPS70625低降调压器转换为稳定的2.5 V直流电源轨。这个电源轨是用来给微控制器供电的。使用TLV803电压管理器，避免欠压锁定状态。

主PCB采用了一种如今用于乳房植入等可植入医疗设备的技术，即涂上功能性生物聚合物来保护其不受周围空间的影响。本例采用皮肤色3Dresyn-MF uv固化无单体树脂多次浸涂3D打印。在每层涂层之间，固化时间为1分钟500mw /cm²每边的紫外光波长为405 nm。总共需要4层涂层来完全覆盖该设备。

在外面，所述刺激电极连接。为了减小厚度，电极的聚酰亚胺作为基体的柔性印刷电路板上制造。电极是镀金限制腐蚀和提高生物相容性。电极被粘合到封装电子器件与所述线圈，和两条带缠绕电子器件周围并焊接在另一侧，固定对分离电极，其中第一实验发生。完成的器件在图中描绘 1。

电源装置由频率为1兆赫的交变磁场供电。这个磁场是由一个专门为这个任务开发的设备创建的。该装置由印刷电路板、散热片、三圈矩形线圈组成。线圈串联电容银行和调谐到1兆赫的共振频率。这样做是为了使通过线圈的电流最大化。距离导线一定距离内的磁场强度与流经导线的电流成正比。 (1) B = μ 0 我 2 π [R 。

通过测量线圈在目标频率处的阻抗，确定了谐振电容的值。然后由四个N-MOSFET晶体管组成的H桥产生预先设定的谐振频率的交流电。MOSFET晶体管的控制信号由专用的微控制器产生。

无线功率传输的一个主要问题是周围材料的影响，特别是在接收和发射设备之间的材料。在这种情况下，能量是通过空气耦合传输和接收线圈。这通常被称为“近场”通信。第二种能量传输是利用电磁波传输能量的远场。天线的大小与波长成正比。对于1ghz，真空中的波长约为30厘米。然而，电磁波在这些频率显著衰减。使用高频来实现良好的天线增益、组织衰减和调节要求使得远场能量传输到无线植入物不切实际。

在这个频率范围内的近场无线电力传输可以仅由具有高导电性的材料通过在它们（金属）或具有高磁导率（例如，MU-金属或坡莫合金）材料制造涡流显著影响。为了支持这一说法，进行了实验（图 2)。We have secured a wireless receiver coil with a parallel resonant capacitor and wireless transmitter 11 cm apart each other. The first measurement was done with no object placed between the coils. A 1 kOhm resistor was placed across the receiving coil resonant circuit to simulate an electric load. The voltage across the resistor with energy transfer active was measured, and received power was calculated using Ohm’s law. After that, the experiment was repeated but in between transmitting and receiving coil, an 8 cm thick porcine tissue was placed. The average power (averaged over 10 seconds) received with and without animal tissue in between was 0.560 mW and 0.588 mW, respectively. This is in accordance with the theory that the effect of tissue on this type of wireless power transfer is minimal (4.7% decrease). One of the possible explanations of the decrease is detuning of the transmitting LC circuit. This may be compensated for during development, and the effect of the tissue presence will be further minimized (at the same distance and angular position of the coils, the power transferred will be smaller without the presence of the tissue).

使用由胃和食道的一长段的猪模型。这是技术训练诸如ESD（内窥镜黏膜下层剥离术），tunnelisation，和POEM（经口内窥镜肌切开术）通常使用的模型。与植入装置中的模型，并插入内窥镜的整体图提供于图 3.。

使用相同的内窥镜黏膜下层隧穿方法通常用于POEM，首先由Inoue等人描述。[ 15，该装置被植入粘膜下层。此过程如图所示 4。A combination of methylene blue and saline solution is first injected about 5 cm above the LES into the submucosal layer with a therapy needle catheter (25G). An electrosurgical knife is used to make an opening into the submucosa. This submucosal pocket is then dilated and disrupted, thus creating a 5 cm long tunnel large enough for the implantation of the device. Using a grasper, the device is moved into the area of the pocket and released. Grasping forceps then move the device into the submucosal tunnel. The opening made by the initial incision is then closed with haemostatic clips.

植入后，发射线圈产生1 MHz频率的交变磁场，为植入设备供电(图) 5)。