16 results about "Peripheral Blood Vessel" patented technology

This utility model relates to an innovation of a carotid artery vasodilator that can be used at home and in the emergency room as a supplement to drug treatment for conditions such as carotid artery obstruction in the neck region. It increases the production of nitric oxide mediated by endothelial nitric oxide synthase in the intact endothelial layer of the carotid artery, which is located on the inner surface of the neck brace. It can be applied for a certain period of time for each patient. The intermittent or continuous operation function can be selected through an adjustable power circuit. It only affects the lesion area and does not affect the patient's peripheral blood vessels. It can be used in situations where nitrates may be prohibited. It prevents the reduction of blood flow to the brain tissue that may occur due to jugular venous constriction. The flexible structure of the applicator neck brace (9) can be maintained in the application area for a long time and includes a pulsed magnetic field (PMF).

The embodiment of the invention provides a PID self-adaptive control ultrasonic imaging method and system based on direct-current motor constant-speed driving. The method comprises the steps that an acquisition signal of a target position is acquired; wherein the target position is a target blood vessel in peripheral blood vessels; based on the acquired signal, controlling an ultrasonic probe of the catheter to perform rotary scanning through a motor to obtain ultrasonic echoes; processing the ultrasonic echo through a preset ultrasonic imaging module to obtain an ultrasonic signal image; and performing coordinate transformation on the ultrasonic signal image to obtain a cross section image and a longitudinal section image of a target blood vessel corresponding to the target position. According to the scheme, the ultrasonic imaging stability of the system can be improved, so that the image quality of the cross section image and the longitudinal section image of the target blood vessel is improved.

Described herein are compounds of Formula I,wherein the variables are defined herein, their use as activators from AMPK, pharmaceutical compositions containing such compounds and their use to treat, for example, heart failure or peripheral vascular disease.

The application discloses a preparation method of a far-infrared moisture-absorbing and heat-generating blanket, and particularly relates to the technical field of blanket manufacturing, which comprises the following steps: pretreating fiber materials, giving the mixed fibers with far-infrared function, moisture-absorbing and heat-generating treatment of the mixed fibers, weaving the mixed fibers into a fabric, and post-finishing the fabric; the far-infrared moisture-absorbing and heat-generating capability is given to the blanket, after the human body absorbs far-infrared rays, the water molecules in the human body can resonate, the vibration energy level of the water molecules can be activated, and then the blood circulation of the human body can be accelerated; long-term use of the blanket can help to improve the microcirculation system of the human body, enhance metabolism, and improve the immunity of the human body; for example, for some people with weak physique and easy to feel cold in hands and feet, use of the blanket can promote the expansion of peripheral blood vessels, make the body warmer, and enhance the self-regulation ability of the body; the thermal effect of the far-infrared rays can also play a certain physiotherapy role.

This invention discloses a 3D-printed helical biodegradable anti-inflammatory vascular stent and its preparation method, belonging to the field of vascular stents. The invention uses multiple helical support wires arranged into a tubular shape, with the ends connected in a serpentine transitional manner. The helical support wires are connected by connecting ribs, and the surface is coated. This invention is biodegradable after use, avoiding the harm caused by permanent retention in the body, and has a lower restenosis rate compared to metal stents. The surface of the vascular stent is coated with a spermidine-containing coating to prevent immune rejection of the implanted vascular stent, thereby addressing the problems of inflammation and intimal hyperplasia. The helical structure facilitates contraction and expansion, has good bending flexibility, and the added connecting ribs increase the radial support performance of the vascular stent, better achieving the effect of vascular remodeling. This invention has significant implications in terms of biodegradability, anti-immune rejection, and mechanical properties, and can be used for treatment in different locations such as peripheral and coronary vessels.

The application discloses a kind of human peripheral blood vessel photoacoustic three-dimensional imaging device and imaging method thereof, belong to blood vessel imaging field.The application provides detailed blood vessel structure and blood flow dynamic information by high resolution and functional monitoring ability of photoacoustic imaging, promote early identification and treatment effect evaluation to common pathological changes such as diabetic foot and peripheral arterial disease;Meanwhile, the application adopts mechanical system, and the detection front end of higher quality can be carried and stably operated, to obtain better photoacoustic imaging result;The application has highly stable precision scanning imaging mode, and various imaging modes are convenient for clinical application;Through the arrangement of imaging tank and its lifting structure, it is ensured that the switching of imaging mode can be applied in limited space, so as to be suitable for gantry type three-dimensional mobile device layout.The application is expected to promote the portability of equipment, reduce equipment development cost, be widely applied in clinical practice and community medical treatment, and improve disease management level.

The utility model relates to medical instrument technical field provides a kind of catheter assembly and steam ablation equipment for peripheral blood vessel steam ablation, and the catheter assembly for peripheral blood vessel steam ablation includes central catheter, balloon catheter, balloon structure and steam generating device, balloon catheter is sleeved outside central catheter, balloon catheter is suitable for liquid and gas to be introduced;Balloon structure is located outside balloon catheter, and balloon structure is communicated with the space in the tube of balloon catheter, and balloon structure is suitable for expansion and contraction;Steam generating device is located in balloon catheter, and steam generating device is used to convert liquid into steam, and steam is used to fill balloon structure.The utility model's catheter assembly for peripheral blood vessel steam ablation, liquid is converted into steam by steam generating device to fill balloon structure, while multilayer balloon catheter structure and pressure monitoring design effectively reduce the risk of blood vessel rupture, with the advantages of accurate controllable, minimally invasive efficient, reduce the risk of blood vessel rupture.

A system (100) for assessing a blood vessel (260) of a patient includes a memory (151) storing instructions and a processor (153) executing the instructions. The instructions, when executed by the processor (153), cause the system (100) to receive pressure measurements obtained by a first intravascular pressure sensing instrument (160) and a second intravascular pressure sensing instrument (170) during a cardiac cycle of the patient; identify a diagnostic time window (1006) of the pressure measurements based on the pressure measurements of the blood vessel (260) of the patient during the cardiac cycle; and calculate an index based on pressure measurements within the diagnostic time window (1006).

The present application relates to the technical field of image reconstruction, in particular to a liver tumor interventional preoperative blood vessel three-dimensional model reconstruction system, which can realize the following steps through the mutual cooperation between multiple modules: obtaining a liver CTA three-dimensional matrix of a target patient before liver tumor intervention; determining the blood vessel confidence corresponding to each voxel in the tumor peripheral region and the normal liver region; determining the gradient distortion degree corresponding to each voxel in the tumor peripheral region; determining the effective blood vessel proportion in the tumor peripheral region; performing adaptive blood vessel fracture completion screening processing according to the gradient distortion degree and the blood vessel confidence to obtain the tumor peripheral blood vessel region; and performing blood vessel reconstruction based on the effective blood vessel proportion in the tumor peripheral region and the gray value corresponding to the voxel in the tumor peripheral blood vessel region. The present application realizes the identification of the tumor peripheral blood vessel region and improves the accuracy of identification, thereby improving the rationality of liver tumor interventional preoperative blood vessel three-dimensional model reconstruction.

A perfusion angiography for peripheral vascular disease assessment in combination with photoplethysmographic imaging. An apparatus (13) and method for performing perfusion imaging receives image sequences concurrently acquired by an X-ray imaging device (2) and by a photoplethysmographic imaging device (3). When temporally aligned, the perfusion status of perfused organ tissue is extracted from both image sequences over time and images are generated for display on a display unit (5) that indicate changes in perfusion status at various locations of the perfused organ tissue, thereby capturing both deep and superficial organ tissue perfusion properties. A reduction in image signal intensity in the photoplethysmographic images caused by a bolus of previously administered contrast agent (10) passing through can be used to temporally align the two concurrently acquired image sequences.

This invention discloses a method for monitoring cardiovascular data in cardiology, comprising the following steps: S1, Non-invasive collaborative acquisition of multimodal cardiovascular data: Constructing a multimodal non-invasive sensor array, fitting sensitive points on the wrist, chest, and behind the ear, to simultaneously acquire photoplethysmography (PPG) pulse wave signals, multi-lead electrocardiogram (ECG) signals, and bioimpedance signals, completing preliminary data encapsulation and synchronous transmission. This invention employs multimodal non-invasive sensor collaborative acquisition technology to simultaneously acquire multi-dimensional cardiovascular data such as ECG, pulse wave, and bioimpedance, breaking the limitations of single-dimensional monitoring and comprehensively covering core monitoring indicators such as cardiac electrophysiology, peripheral vascular function, and cardiac function, providing complete data support for disease assessment and effectively avoiding missed diagnoses of early cardiovascular abnormalities.

This application relates to the field of physiological signal detection and health monitoring technology, and provides a wearable device and method for microcirculation status assessment and multi-physiological parameter monitoring. The wearable device includes: a signal acquisition unit, a feature extraction unit, and a status assessment unit. The signal acquisition unit is used to acquire at least one physiological signal characterizing the hemodynamic characteristics and related microcirculatory physiological processes within peripheral blood vessels. The feature extraction unit is used to obtain feature parameters based on the physiological signals. The status assessment unit is used to analyze and calculate based on the feature parameters using a machine learning model and / or a physiological mechanism model to obtain a status assessment result characterizing the peripheral vascular microcirculation status. This application transforms the palpation assessment process, which relies on human experience, into an engineered, parameterized, and objective assessment process, reducing reliance on human experience and improving the objectivity, consistency, accuracy, and repeatability of the assessment results.

We propose a photoacoustic imaging device and method capable of generating highly reproducible three-dimensional photoacoustic wave images of peripheral blood vessels in deep regions of a target area, with significantly higher accuracy and while ensuring the safety of the subject, for target tissues or organs within the subject. [Solution] The control unit sets the scan path of the light source probe unit to encompass the target area specified by the vision unit, and guides and controls the tip of the robot tube according to the scan path.

This invention relates to the field of temperature control technology, specifically to a multi-zone dynamic sleep temperature control method based on human thermophysiological rhythms. It involves dividing the sleep support surface along the longitudinal direction of the body into multiple temperature control zones, acquiring the user's sleep stage information in real time, and then executing dynamic sleep temperature control. On one hand, during the sleep onset stage, the increased temperature in the feet triggers reflexive vasodilation of peripheral blood vessels to open heat dissipation pathways; the decreased temperature in the head lowers the hypothalamic temperature set point to enhance heat dissipation drive; and the slightly cooler torso provides a temperature gradient for core heat dissipation, thus significantly improving the rate of core body temperature decrease and significantly shortening the sleep latency. On the other hand, after entering the deep sleep maintenance stage, the method maintains the peripheral vasodilation state established during the sleep onset stage with minimal energy consumption, preventing the feet from cooling back and causing vasoconstriction, and avoiding micro-awakening triggered by torso temperature fluctuations, achieving a balance between thermal comfort and energy conservation throughout the night.

An embolization microcatheter including an elongated main body and a distal section, the distal section comprising an off-setting portion and a winding portion, wherein the winding portion comprises about half a loop of a three-dimensional spiral, such that a longitudinal axis of the winding portion is offset and / or disposed at an acute angle relative to a longitudinal axis of the elongated main body, and wherein the off-setting portion is disposed at an angle of between about 60° and about 120° degrees relative to the longitudinal axis of the elongated main body.