181 results about "Pulse treatment" patented technology

The invention discloses a dynamic real-time evaluation device and evaluation method for an irreversible electroporation tissue ablation effect. Electrodes participating and not participating pulse transfer in a primary pulse application process of irreversible electroporation tumor treatment are utilized to detect the tissue impedance spectrum change before and after pulse treatment and effectively avoid unstable measurement of an impedance spectrum signal of a pulse application electrode and limited reflection of the ablation area. According to the impedance spectrum change measured by different electrodes, the relationship between the impedance spectrum change and the actual ablation size is built after subsequent data processing. At the same time, a small signal testing pulse application mode is adopted to acquire the tissue electric performance change during treatment and build a mathematical model to achieve the judgment of the tissue ablation situation. Advantages of a sweep frequency mode and a testing pulse mode are combined to achieve the effect that the treatment effect is dynamically monitored in the treatment process and assessed immediately after treatment of the ablation effect after irreversible electroporation pulse treatment.

A counterpulsation device that operates without the use of compressed air or pressurized gas includes at least one inflatable cuff that is adapted to be placed about a selected portion of the patient's body. A first conduit connects the inflatable cuff to an air transfer device so that noncompressed air can be transferred from the air transfer device to the cuff through the first conduit to inflate the cuff. A second conduit connects the cuff to the air transfer device so that air can flow through the second conduit to deflate the cuff. The system is controlled using a computer-based controller that requires a series of initialization procedures before it will operate the system. A patient profile database includes historical treatment data for each patient and is automatically updated with each counter pulsation therapy session.

A system and method of estimating a distance between the distal end of an optical fiber and treated tissue, to improve treatment efficiency, is provided herein. The estimation is achieved by modulating the numerical aperture of a light beam transmitted through the fiber to receive reflections from the tissue and distinguish them from other reflections in the fiber, and further by calculating the distance by comparing reflection intensities of beams having different numerical aperture values that illuminate the tissue over a very short period, so that tissue and environment conditions do not change much. Distance estimation may be carried out by modulating the treatment beam itself, or by a light beam transmitted between pulses of a pulsed treatment beam.