33 results about "Peripheral blood flow" patented technology

An electromedical implant (100, 101, 102, 103) for monitoring a cardiac blood flow (B1) of a patient includes a detector (10, 10′, 10″) which obtains a first measurement signal (S1) associated with the cardiac blood flow (B1) and a second measurement signal (S2) associated with the epithoracic, peripheral blood flow (B2). A monitoring assembly (20) then generates a first parameter (P1) from the first measurement signal (S1) which is indicative of a time (tsys) at which blood is ejected from the heart, and a second parameter (2) from the second measurement signal (S2) which is indicative of a time (tgef) of a blood pulse in the thoracic tissue which is associated with the ejection of blood. An evaluation unit (30) then generates a pulse transit time (Δt=tgef−tsys) from the first parameter (P1) and the second parameter (P2). The detector (10, 10′, 10″) includes an impedance measuring unit (12) having an electrode assembly (11, 11′) for detection of at least the second measurement signal (S2) in the form of an impedance signal.

The present invention provides systems and methods for treating wounds in patients who lack the innate ability to regulate glucose (e.g., diabetic patients). In one aspect of the invention, a method includes positioning an internal bypass device within the duodenum to inhibit contact between chyme passing therethrough and an internal wall of the duodenum and maintaining the internal bypass device within the duodenum for a sufficient period of time to decrease insulin resistance and reduce a blood glucose level in the patient. The internal bypass device increases peripheral blood flow and elevates an immune system response to accelerate healing of the wound.

This application relates to the field of biomedical engineering, and discloses a method and system for evaluating the individualized blood perfusion rate of biological tissues. Based on the influence of peripheral blood flow on the thawing process of the target biological tissue after freezing, the calculation of local tissue is established by the principle of boundary convection heat transfer. An algorithm for personalized blood perfusion rate, the method includes: obtaining the surface area of ​​the ice ball formed by freezing the target biological tissue; obtaining the temperature gradient of the ice ball surface and its change over time according to the temperature of the ice ball surface The gradient and its variation with time and the surface area of ​​the ice ball determine the personalized blood perfusion rate around the target biological tissue; output the personalized blood perfusion rate around the target biological tissue.

A non-invasive detection system with a peripheral vascular blood flow adjusting function comprises a data collecting module, a filtering module, a feature point / section identification module, a data analysis module and a blood flow adjusting function evaluation module. Cuff downstream front arm or hand skin blood flow volume signals are continuously measured before and after blood flow of the brachial artery is blocked by means of the method that the unilateral upper arm is pressurized through a cuff, after the blood flow volume signals are subjected to filtering treatment, a stable blood flow section before compression of the cuff and a congestion section after relieving of cuff compression are identified, and the specific value of average blood flow volumes of the congestion section and the stable blood flow section is calculated to obtain the index of quantitative evaluation for the peripheral vascular blood flow adjusting function. The non-invasive effect is achieved in the whole operating process, the measuring time is short, through feature analysis for a time registration curve of the blood flow, a blood flow changing section dominated by peripheral vascular ischemic reaction is identified, the influence of the upstream artery endothelial function on peripheral blood flow signals can be effectively excluded to achieve targeted evaluation on the human body peripheral vascular blood flow adjusting function, and the pretty good application prospects are achieved.