Leak-compensated flow triggering and cycling in medical ventilators
    2.
    发明授权
    Leak-compensated flow triggering and cycling in medical ventilators 有权
    泄漏补偿流量触发和医疗呼吸机循环

    公开(公告)号:US08272379B2

    公开(公告)日:2012-09-25

    申请号:US12242741

    申请日:2008-09-30

    IPC分类号: A61M11/00

    摘要: This disclosure describes systems and methods for compensating for inelastic and elastic leaks in a ventilation system. The disclosure describes a model-based enhancement to conventional flow triggering and cycling methodologies that improves the timing and patient work of flow-based triggering and cycling performance. The methods and systems described herein compensate for the leak condition and minimize additional effort a patient has to exert to generate the same patient synchrony and comfort level compared to no leak condition. One method described includes calculating an elastic leakage and an inelastic leakage based on current measurements of pressure and flow in the ventilation system and then estimating a leak-compensated lung flow using the inelastic and elastic leaks and pneumatic attributes of the patient-ventilator system.

    摘要翻译: 本公开描述了用于补偿通气系统中的非弹性和弹性泄漏的系统和方法。 本公开描述了对常规流量触发和循环方法的基于模型的增强,其改进了基于流的触发和循环性能的时间和患者工作。 本文所述的方法和系统补偿了泄漏状况,并且尽可能减少病人与无泄漏状况相比产生相同患者同步和舒适度的额外努力。 所描述的一种方法包括基于通气系统中的压力和流量的当前测量值来计算弹性泄漏和非弹性泄漏,然后使用患者 - 呼吸机系统的非弹性和弹性泄漏和气动属性来估计泄漏补偿肺流。

    Leak-compensated respiratory mechanics estimation in medical ventilators
    4.
    发明授权
    Leak-compensated respiratory mechanics estimation in medical ventilators 有权
    医用呼吸机泄漏补偿呼吸力学估计

    公开(公告)号:US08424521B2

    公开(公告)日:2013-04-23

    申请号:US12395332

    申请日:2009-02-27

    IPC分类号: F16K31/02

    摘要: This disclosure describes systems and methods for compensating for leakage when determining the respiratory mechanics of a patient during delivery of gas from a medical ventilator to a patient. The systems and methods include monitoring an instantaneous flow in the ventilation system based on one or more measurements of pressure and flow in ventilation system. The leakage is modeled using a predetermined leakage model. A leak-compensated instantaneous lung flow of gas inhaled or exhaled by the patient is estimated. Using the leak-compensated lung flow and a predetermined respiratory mechanics model, the respiratory mechanics of a patient may be estimated including at least one of a leak-compensated lung compliance and a leak-compensated lung resistance. The method may include using a dynamic respiratory mechanics model or a static respiratory mechanics model that requires use of a pause maneuver to collect the necessary data.

    摘要翻译: 本公开描述了在从医用呼吸机向患者输送气体时确定患者的呼吸力学时补偿泄漏的系统和方法。 系统和方法包括基于通风系统中的一个或多个压力和流量测量来监测通风系统中的瞬时流量。 使用预定的泄漏模型建立泄漏。 估计由患者吸入或呼出的气体的泄漏补偿的瞬时肺流。 使用泄漏补偿肺流和预定的呼吸力学模型,可以估计患者的呼吸力学,包括泄漏补偿的肺顺应性和泄漏补偿的肺阻力中的至少一种。 该方法可以包括使用动态呼吸力学模型或需要使用暂停操作来收集必要数据的静态呼吸力学模型。