摘要:
The present invention includes a system for delivering energy to an airway wall of a lung comprising an energy delivering apparatus and a PID controller having one or more variable gain factors which are rest after energy deliver has begun. The energy delivering apparatus may include a flexible elongated member and a distal expandable basket having at least one electrode for transferring energy to the airway wall and at least one temperature sensor for measuring temperature. The PID controller determines a new power set point base on an error between a preset temperature and the measured temperature. The algorithm can be Pi+1 = Pi + G(αe i + βe i-1 + γ e i-2 ) where α, β and γ are preset values and α is from 1 to 2; β is from -1 to -2; and γ is from -0.5 to 0-5. In another variation, the controller is configured to shut down if various measured parameters are exceeded such as, for example, energy, impedance, temperature, temperature differences, activation time and combinations thereof. Methods for treating a target medium using a PID algorithm are also provided.
摘要翻译:本发明包括一种用于向肺气道壁输送能量的系统,包括能量输送装置和具有一个或多个可变增益因子的PID控制器,所述可变增益因子在能量传递开始之后休息。 能量输送装置可以包括柔性细长构件和远端可膨胀篮,其具有用于将能量传递到气道壁的至少一个电极和用于测量温度的至少一个温度传感器。 PID控制器根据预设温度和测量温度之间的误差确定新的功率设定点。 该算法可以是Pi + 1 = Pi + G(±e i +²ei-1 +³e i-2)其中±,²和³是预设值,±是1到2; ²为-1至-2; ³为-0.5〜0-5。 在另一变型中,控制器被配置为如果超过了各种测量参数,例如能量,阻抗,温度,温度差,激活时间及其组合,则关闭。 还提供了使用PID算法处理目标介质的方法。
摘要:
A device for delivering energy to an airway of a lung, the device comprising: an elongate member including a proximal end, a distal end, and a lumen extending therebetween; an actuating member operably coupled to the proximal end; an electrode assembly operably coupled to the distal end, wherein the electrode assembly includes a plurality of electrodes; and an operating member extending from the actuating member, through the lumen of the elongate member, and coupled to a distal end of the electrode assembly, wherein the operating member is configured to move reciprocally relative to the elongate member via actuation of the actuating member, wherein reciprocal movement of the operating member is configured to transition the electrode assembly between a first configuration and a second configuration, and wherein the operating member is biased distally by a resilient member in the actuating member.
摘要:
A system configured to deliver energy to an airway in a lung, the system comprising: an energy delivery device having a temperature detecting element and an energy emission element; an energy generator configured to be coupled to the energy emission element and having an activation state and a standby state, wherein energy is delivered to the energy emission element in the activation state and not in the standby state; and a controller having a processor, the processor being configured to provide an indication when: a temperature measured by the temperature detecting element is not within a predetermined temperature range; or an impedance of an energy emission circuit between the energy generator, the energy emission element, and a patient is not within a predetermined impedance range.
摘要:
Systems and methods for delivering energy to passageways in a patient, such as airways in the lung of a patient for treating asthma. One embodiment of a method for delivering energy to a passageway comprises positioning an access device in a lung airway of a patient and advancing an elongated body of a treatment device along the access device until an energy delivery unit at a distal portion of the elongated body projects from the access device. The method can further include expanding the energy delivery unit such that energy delivery elements contact a sidewall of the airway and activating an energy supply coupled to the treatment device such that energy is delivered to the sidewall of the airway. A single person physically operates both the access device and the treatment device while expanding the energy delivery unit and activating the energy supply.
摘要:
A system configured to deliver energy to an airway in a lung, the system comprising: an energy delivery device having a temperature detecting element and an energy emission element; an energy generator configured to be coupled to the energy emission element and having an activation state and a standby state, wherein energy is delivered to the energy emission element in the activation state and not in the standby state; and a controller having a processor, the processor being configured to provide an indication when: a temperature measured by the temperature detecting element is not within a predetermined temperature range; or an impedance of an energy emission circuit between the energy generator, the energy emission element, and a patient is not within a predetermined impedance range.
摘要:
A device for delivering energy to an airway of a lung, the device comprising: an elongate member including a proximal end, a distal end, and a lumen extending therebetween; an actuating member operably coupled to the proximal end; an electrode assembly operably coupled to the distal end, wherein the electrode assembly includes a plurality of electrodes; and an operating member extending from the actuating member, through the lumen of the elongate member, and coupled to a distal end of the electrode assembly, wherein the operating member is configured to move reciprocally relative to the elongate member via actuation of the actuating member, wherein reciprocal movement of the operating member is configured to transition the electrode assembly between a first configuration and a second configuration, and wherein the operating member is biased distally by a resilient member in the actuating member.