598 results about "Circulatory system" patented technology

Set forth are vascular valves and servovalves and methods of using the same that may be positioned in the circulatory system without interrupting blood flow to facilitate solid organ transplantation so as to reduce graft organ anoxia and degradation before and after harvesting and storage, thereby minimizing late-term cardiac allograft vasculopathy as a major cause of graft failure. Along the urinary tract, bypassing bladder-generated urge sensation by diverting urine directly from the ureters to a neobladder or collection bag alleviates intractable incontinence, nocturia, urethral syndrome, overactive bladder, dysuria, or frequency. Where the lower tract is missing, a prosthesis can thwart disease and preclude the degenerative metaplastic transition to carcinoma risked when gut is used to construct a conduit for urine, a neobladder, and / or high-maintenance stoma. Druglines to valves and servovalves can directly pipeline-target medication to nidi, anastomoses, or any other trouble spots.

The present invention relates generally to improved systems and methods for removing undesirable material residing in vessels. More specifically, the present invention relates to systems and methods for using at least one cannula to remove substantially en bloc, from a site of obstruction or interest, undesirable material without fragmentation and without excessive fluid loss.

A system is provided which includes a cannula and a secondary device. The cannula includes an expandable member, a cannula lumen, and a cannula proximal end. The expandable member includes a proximal most end, a distal most end, at least two movable sections, with the space between the at least two moveable sections, and an impermeable membrane extending across the space between each of the at least two moveable sections. In addition, the impermeable membrane extends from the expandable member distal most end to the expandable member proximal most end. The secondary device is configured to be coaxially placed through the cannula lumen. The cannula proximal end is configured to operatively couple to a vacuum source configured to create a negative pressure to pull an undesirable material into the cannula lumen.

The invention relates to the technical field of data monitoring and analysis, and discloses a hemodialysis care unit extracorporeal circulator monitoring method and system and a storage medium. The method comprises the steps that vital signs and identity features of a patient are collected, a sign feature data set is obtained through fusion processing, and initial dialysis parameters are generated; analyzing the sign feature data set to obtain blood vessel state parameters; adjusting a circulation system based on the blood vessel state parameters and the initial dialysis parameters to obtain circulation control data; monitoring a dialysate path by using the circulation control data, and generating a liquid path operation parameter; the circulation control data and the liquid path operation parameters are integrated to analyze the system state, and equipment early warning indexes are formed; and evaluating equipment operation according to the early warning index and generating an automatic control instruction. According to the method, deep integration of the physical sign characteristic data of the patient and the equipment operation data is realized, a data-driven objective decision basis is provided for the dialysis process, and the safety and effectiveness of dialysis treatment are improved.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

The invention relates to the technical field of health management of old people, and discloses a method and a system for predicting multiple diseases of old people. The method comprises the following steps: acquiring multi-modal health monitoring data of a target old person in a preset time period, wherein the multi-modal health monitoring data comprises physiological index time sequence data, a medication record sequence and a daily activity ability evaluation result; and performing cross-modal correlation analysis on the multi-modal health monitoring data to generate a disease interaction characteristic matrix containing metabolic disease correlation degree, circulatory system disease coordination index and neurodegenerative disease progress rate. And performing hierarchical clustering processing on the feature matrix by adopting a dynamic weight distribution algorithm, and outputting potential common disease combinations of the target old people and a priority score of each common disease combination. And generating a personalized intervention strategy set including a drug interaction avoidance scheme, a rehabilitation training intensity adjustment scheme and a nutrition intake ratio scheme according to the priority score.

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions. The capture system can include a tubular body comprising a first end, a second end, and an axial length therebetween, the first end having an opening and a capture guide. The capture system can include one or more tensioners coupled to the capture guide. The tubular body has a first configuration in which the first end and the capture guide are expanded while the second end and a majority of the tubular body remains compressed. The tubular body is transformable to a second configuration by application of tension by the tensioners. The catheter can remove a large volume of clot. In some embodiments, the body of the catheter or the funnel tip is expandable. The catheter can include a dilator and a peel-away cover.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

The invention provides a damp heat-oxygen-internal pressure-load coupled non-metal pipeline aging device and a method capable of evaluating the service life of an in-service non-metal pipeline. The non-metal pipeline aging device comprises six parts, namely an inner cavity, a box body temperature control system, a box body humidity control system, a pipeline internal pressure control system, a pipeline external load loading device and an air supply circulating system, and an accelerated aging test of a non-metal pipeline under different working condition combinations of four factors, namely damp heat, oxygen, internal pressure and load can be carried out by virtue of the aging device. Measuring oxidation induction periods before and after aging of the in-service non-metal pipeline and the non-metal pipeline with the same mark through a differential heat scanning method, substituting the oxidation induction periods into a non-metal pipeline aging life prediction formula coupled with damp heat-oxygen-internal pressure-load factors, and calculating to obtain the service aging life. According to the method, damp heat-oxygen-internal pressure-external load multi-factor coupling is realized, so that an actual service environment is accurately simulated, and comprehensive technical support can be provided for safe operation of the non-metal pipeline.

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions.

In some examples, a capture assembly configured to remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system, includes a body configured to receive the material of interest. The body can be configured to axially lengthen and shorten.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

The present invention relates to a liquid metal bearing dynamic balance correction system and method applied to the field of CT tube technology. The dynamic balance correction system comprises an air circulation system, a liquid metal bearing system, and a test sensor system. The air circulation system comprises a sealed outer cover, an exhaust fan is arranged on the outer wall of the sealed outer cover, one end of the exhaust fan is connected to a gas circulation channel, and the end of the gas circulation channel away from the exhaust fan is connected to the inside of the sealed outer cover. The dynamic balance correction system of the present invention can effectively avoid the problem that the liquid metal in the bearing reacts with oxygen in the atmosphere, causing the viscosity of the liquid metal to change, and then causing the bearing performance to decrease when performing dynamic balance correction on the liquid metal bearing. The dynamic balance correction system can not only perform dynamic balance correction on the rotor, but also perform dynamic balance correction on the final product structure of the rotor and the stator, thereby greatly improving the accuracy and effect of the dynamic balance correction.

The present invention relates generally to improved systems and methods for removing undesirable material residing in vessels. More specifically, the present invention relates to systems and methods for using at least one cannula to remove substantially en bloc, from a site of obstruction or interest, undesirable material without fragmentation and without excessive fluid loss.

The present invention relates generally to improved systems and methods for removing undesirable material residing in vessels. More specifically, the present invention relates to systems and methods for using at least one cannula to remove substantially en bloc, from a site of obstruction or interest, undesirable material without fragmentation and without excessive fluid loss.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

A method for optimizing a flow of water of a swimming pool or spa includes monitoring a parameter associated with performance of a first piece of equipment of the swimming pool or spa, such as but not limited to a heat pump, and relative to a target for the parameter. The method includes activating a bypass valve such that water bypasses the first piece equipment based on the parameter reaching or exceeding the target. The method includes controlling operation of a second piece of equipment of a circulation system responsive to activation of the bypass valve.

The invention discloses a coenzyme Q10-containing medicine for improving heart activity and a preparation method thereof, and particularly belongs to the technical field of biological medicines. The medicine comprises functional components and auxiliary materials, wherein the functional components comprise a cactus extract, a calligonum mongolicum extract, an astragalus membranaceus extract, a sea-buckthorn extract and coenzyme Q10; the hypoxia survival time and the load-bearing swimming time of mice can be remarkably prolonged through low, medium and high dose groups of the medicine for improving the heart vitality, the requirement of fatigue caused by high labor intensity for oxygen is further met by enhancing the immunity of the organism, supply of nutrient substances to the brain, the heart, the bones and the muscles of the organism is enhanced, and the effect of improving the heart vitality is achieved. The composition can regulate the activity of central nervous system, promote the normal operation of the body circulation system, relieve and eliminate fatigue and damage to the body caused by fatigue and chronic fatigue, and quickly recover physical strength.

The invention regards an adhesive patch for oscillatory blood pressure measurements of a subject, the patch comprising: an actuator arranged for application of an external pressure onto a target part of the circulatory system of the subject; a pressure sensor arranged in connection with the actuator, wherein the pressure sensor is adapted to measure the external pressure; wherein the patch is arranged to obtain oscillatory blood pressure measurements of the target part by setting the external pressure applied to the target part above a systolic blood pressure, and thereafter gradually releasing the external pressure until it is below a diastolic blood pressure, while measuring, by the pressure sensor, resulting pressure oscillations of the actuator.

The invention discloses a pulsating pump system, a medical device implantation intervention simulation system and a control method, and relates to the technical field of medical device tests.The pulsating pump system comprises a ventricular simulation cavity, a ventricular intervention simulation cavity, a ventricular intervention simulation cavity, a ventricular intervention simulation cavity, a ventricular intervention simulation cavity and a ventricular intervention simulation cavity, a liquid inlet and a liquid outlet of the ventricular simulation cavity are respectively connected with a liquid inlet pipe and a liquid outlet pipe through one-way valves; the driving assembly is relatively and fixedly connected with the ventricular simulation cavity and is used for driving the diaphragm to do regular reciprocating motion; the flow sensor is connected to the liquid outlet pipe in series and used for detecting the flow velocity of the liquid medium of the circulating system; the pressure sensor is connected to the liquid outlet pipe in series and used for detecting the pressure of liquid at the designated position of the circulating system; according to the pulsating pump system, the medical instrument implantation intervention simulation system and the control method, the physiological waveform in the blood vessel of the human body can be accurately reproduced through closed-loop control.

The invention discloses an extracorporeal circulation system and a control method thereof, and relates to the technical field of medical instruments. The extracorporeal circulation system comprises a membrane oxygenator, a microembolus filter, a rolling pump, a first pressure detector and a second pressure detector; a liquid inlet of the membrane oxygenator is communicated with the arterial cannula; the microembolus filter is circularly communicated with the membrane oxygenator, and the liquid outlet end of the microembolus filter is communicated with the venous cannula; the rolling pump is circularly communicated with the membrane oxygenator; the first pressure detector is communicated with the rolling pump and is used for detecting the outlet liquid pressure of the rolling pump and generating a first pressure signal; the second pressure detector is communicated with the microplug filter and is used for detecting the inlet liquid pressure of the microplug filter and generating a second pressure signal; the structure of the extracorporeal circulation system and the control method of the extracorporeal circulation system are improved, the accuracy and timeliness of medical staff for judging the oxygenation effect of the membrane type oxygenator are improved, the membrane type oxygenator can be replaced in time, a large number of complications can be avoided, and the death rate of patients is reduced.

The present disclosure provides a fluid flow augmenting device to augment a fluid flow in any fluid circulation system without significant additional power consumption. The device includes an annular body extending along a longitudinal axis and defining an internal volume. The annular body includes a fluid inlet on one longitudinal end and a fluid outlet on another end and a first and second fluid directing structures. The first fluid directing structure receives a first fluid flow with a first fluid flow rate from a fluid source via the fluid inlet while the second fluid directing structure induces a second fluid flow with a second fluid flow rate from around the device to combine with the first fluid flow and generate an augmented fluid flow having an augmented fluid flow rate to be exhausted via the fluid outlet.

The utility model relates to an air fryer with a good heat dissipation effect, which comprises a machine body, a cooking cavity arranged in the machine body and a hot air circulation system communicated with the cooking cavity, the machine body is provided with a mounting groove, a box body with liquid storage cavities is detachably arranged in the mounting groove, and the liquid storage cavities comprise a first liquid storage cavity and a second liquid storage cavity; a mounting cavity is formed in the machine body, a liquid conveying system is arranged in the mounting cavity, and the liquid conveying system comprises a first pump and a second pump which are communicated with the first liquid storage cavity and the second liquid storage cavity respectively; a heat dissipation air channel communicated with the installation cavity is arranged in the machine body, a heat dissipation assembly is arranged in the heat dissipation air channel, and a first ventilation opening and a second ventilation opening which are communicated with the installation cavity and the atmosphere are formed in the positions, close to the first pump and the second pump, of the machine body respectively. Through the first ventilation opening and the second ventilation opening, heat dissipation of the first pump and the second pump can be achieved through external cold air, and the heat dissipation effect is effectively improved.

The invention relates to a refrigerant circulation system and a control method and device thereof, electronic equipment and a storage medium, the system comprises a refrigerant circulation subsystem and a liquid storage module, the refrigerant circulation subsystem comprises a first pressure pipeline and a second pressure pipeline, and the pressure of the first pressure pipeline is larger than that of the second pressure pipeline; the liquid storage module is connected with the first pressure pipeline through a first pipeline, and a liquid inlet valve is mounted on the first pipeline; the liquid storage module is connected with the second pressure pipeline through a second pipeline, a gas balance valve is installed on the second pipeline, and the gas balance valve is used for adjusting the flow speed of a refrigerant in the liquid storage module; the liquid storage module is connected with the second pressure pipeline through a third pipeline, and a liquid discharge valve is installed on the third pipeline. Therefore, the refrigerant amount in the refrigerant circulation system can be adjusted more accurately, and the energy efficiency of the refrigerant circulation system is improved.

The disclosure relates to devices and methods for the treatment of edema, which devices use a restrictor for flow compensation. Devices and methods of the invention further use a flow-restrictor in the circulatory system, upstream of an intravascular pump, to balance pressure changes induced by the pump and to compensate for downstream flow. The device may be provided as an indwelling, intravascular catheter with a mechanical pump such as an impeller and a selectively deployable restrictor such as an inflatable balloon. Congestive heart failure or edema is treated by\operating the pump in an innominate vein and using the restrictor for flow compensation, to restrict the upstream flow and thus amplify or maintain pressure reduction at the lymphatic outlet.

The invention relates to the technical field of data analysis, can be applied to business system platforms of financial science and technology, medical treatment and health and the like, and discloses a human body state characteristic value analysis method, device and equipment and a medium. Performing system state analysis on an endocrine system, a circulatory system and a respiratory system of the user according to the physical examination data to obtain a system state characteristic value set, constructing a physiological index vector and a disease course characteristic vector according to the physical examination data, and constructing a complication incidence matrix according to case data; performing complication association analysis on the user according to the physiological index vector, the disease course feature vector and the complication association matrix to obtain a complication feature value, analyzing a criticality feature value of the user according to a system state feature value set and the complication feature value to obtain a hazard feature value set, and performing weighted summation on the hazard feature value set to obtain a complication feature value set; and obtaining a human body state characteristic value. And the accuracy of human body state characteristic value analysis is improved.

The invention belongs to the technical field of microbial fermentation, and particularly relates to a forced external circulation type microbubble reactor and a reaction method thereof. The reactor comprises a tank body (1), at least one group of circulating inlets (11) and circulating outlets (12) are respectively formed in the upper part and the lower part of the tank body (1), and a circulating system capable of enabling reaction liquid to circulate up and down is connected between each group of circulating inlets (11) and circulating outlets (12); the circulating system comprises a plug flow circulating pump (3), a circulating pipe (7), a microbubble generator (5) and an airflow mixing distributor (4) positioned at a circulating outlet (12); and more than one microbubble generator (5) is arranged at one point or more points in the circulating pipe. The plug-flow circulating pump is adopted, and the plug-flow paddles of the plug-flow circulating pump have the advantages of being large in construction flow, small in power consumption, mild in flowing, small in shearing force generated on liquid and the like, so that the reactor more suitable for microbial fermentation is constructed.

The invention relates to the technical field of biomedical engineering, in particular to a separated type organ-like chip model and a use method thereof.The model comprises a chip, an organ-like unit module and a fluid control system, and the use method comprises the steps that firstly, the chip is assembled and prepared; step 2, cell inoculation and culture; step 3, establishing and operating a fluid circulation system; step 4, organ-like unit function detection and data acquisition; 5, analyzing an experimental result and adjusting the model; the model is connected with a micro-fluidic channel through an independent cavity, and the characteristics, cell types and culture conditions of a cell culture bracket can be regulated and controlled according to the characteristics of simulated organs. Meanwhile, the micro-fluidic channel ensures stable and ordered material exchange among the organoid units, and is beneficial to more accurately screening out effective treatment schemes and drug targets.

The present invention relates generally to improved systems and methods for removing undesirable material residing in vessels. More specifically, the present invention relates to systems and methods for using at least one cannula to remove substantially en bloc, from a site of obstruction or interest, undesirable material without fragmentation and without excessive fluid loss.