22 results about "Blood temperature" patented technology

The utility model discloses a blood extracorporeal circulation device, which belongs to the technical field of blood extracorporeal circulation equipment and comprises an inner tube and an outer tube, the inner tube and the outer tube are integrally nested, one end of the outer tube is connected with an air inlet tube, the air inlet tube is communicated with oxygen inlet equipment, and the other end of the outer tube is connected with an air outlet tube. A temperature changer and a flow speed controller are connected between one end, far away from the air outlet end, of the outer pipe and the oxygen inlet equipment; one end of the inner tube is a liquid inlet end for transporting blood, the other end of a blood inlet of the inner tube is a liquid outlet end, and the liquid outlet end is connected with a temperature sensor, an oxygen saturation sensor, a blood pump and a microembolus filter; the part, in the outer pipe, of the inner pipe is made of a gas exchange membrane material, and the liquid inlet end of the inner pipe is opposite to the gas inlet pipe of the outer pipe. The blood temperature rising process is safer, meanwhile, in the blood temperature rising process, the oxygen saturation index in the blood can be directly adjusted, the blood oxygen value is simple, convenient and controllable on the basis of convenient temperature rising, temperature control and oxygen saturation of in-vitro blood circulation are carried out at the same time, and operation is easy and safe.

The invention relates to a method and equipment for calculating the blood temperature of a patient in hemodialysis treatment, and the method comprises the following steps: obtaining geometric parameters and physical parameters of an extracorporeal circulation pipeline of hemodialysis, so as to establish a transient heat transfer model for representing the spatial-temporal dynamic change of the blood temperature in the extracorporeal circulation pipeline; acquiring operation parameters corresponding to the hemodialysis process, and constraining the transient heat transfer model by using the operation parameters to generate a constrained heat transfer model used for reflecting a heat exchange boundary condition in a real-time dialysis scene; carrying out numerical solution on the constrained heat transfer model so as to generate temperature field distribution data for representing the temperature of each part in the extracorporeal circulation pipeline under the preset dialysis duration; and extracting a temperature value corresponding to the position of the blood outlet of the extracorporeal circulation pipeline as the temperature of the blood outlet. The device has the advantage of better maintaining heat balance and safety of a patient in the treatment process.

This invention relates to the fields of computer and BeiDou positioning technology, and discloses a method and system for high-precision BeiDou positioning and path planning in emergency blood logistics. The method includes: acquiring high-precision positioning outdoors using a BeiDou module; detecting signal attenuation and switching positioning modes before entering indoor environments; performing multi-source positioning indoors by fusing inertial measurement units, wheel speed encoders, and a pre-built 3D point cloud map; aligning indoor and outdoor trajectories in time and space to form a seamless trajectory throughout the entire process; performing hierarchical path planning based on this seamless trajectory, blood mission information, and building structure data; and monitoring vehicle status, environmental obstacles, and blood temperature control parameters in real time during transportation, triggering path replanning and emergency dispatch if any limits are exceeded. This invention achieves continuous high-precision positioning, safe and compliant path planning, and intelligent risk warning throughout the entire blood transportation process, improving the reliability and timeliness of emergency blood logistics.

The invention relates to a patient blood temperature prediction model switching method based on computing power difference and a related device. The method comprises the steps that fixed parameters and operation parameters of a hemodialysis extracorporeal circulation pipeline are obtained; based on current computing power or user preferences, the decision enables a precision mode or an efficiency mode. When the precision mode is started, a progress monitor is started to monitor the calculation duration of the complete model; if the calculation is completed within the preset duration, extracting an outlet prediction temperature from a temperature field generated by the complete model; and if the calculation is overtime, stopping the calculation and switching to the efficiency mode. When the efficiency mode is started, inputting the fixed parameters and the operation parameters into a pre-trained bridging model to calculate a group of model coefficients; and calculating to obtain the outlet predicted temperature by using the simple model and the model coefficient. The method has the advantage of balancing calculation precision and real-time responsiveness.

The utility model discloses cooling equipment for emergency nursing, which relates to the technical field of medical auxiliary equipment, and comprises a limb cooling belt, a silica gel heat conduction patch is adhered to the outer wall of one side of the limb cooling belt, a circulating heat exchange pipe is embedded in the inner wall of the limb cooling belt, and the outer walls of the two ends of the circulating heat exchange pipe are connected with circulating pipe joints. And ventilation and heat dissipation holes distributed at equal intervals are formed in the outer walls of the silica gel heat conduction paste and the limb cooling belt, connecting belts are fixedly arranged on the outer walls of the two ends of the limb cooling belt, and elastic sleeve belts are fixedly arranged on the outer walls of one ends of the two connecting belts. The limb cooling belt wraps the limb of a patient, the silica gel heat conduction paste is tightly attached to the limb of the patient, circulating water in the circulating heat exchange pipe continuously absorbs heat generated on the limb of the patient through the silica gel heat conduction paste, the conveying distance of blood vessels on the limb of the patient is long, and the distance between the blood vessels and the body surface is short; the cooling speed of blood in blood vessels of a patient is increased, and the cooling effect on the patient is improved.

The utility model relates to the technical field of medical instruments, in particular to a blood rewarming device of autoblood recovery equipment. The blood rewarming device of the autoblood recovery equipment comprises an autoblood recovery machine body, a control panel, a control host, a supporting block, a first supporting rod, a hanging assembly, a hanging buckle, a flexible sleeve, an ultrasonic sensor, a temperature sensor, a connecting block and a heating wire. A control panel is installed on the front side of the autoblood recycling machine body, the autoblood recycling machine body is electrically connected with the control panel, and a first supporting rod is connected to the top of the autoblood recycling machine body. When heated blood is transfused through the blood transfusion apparatus, the blood flows through a built-in ultrasonic sensor, and meanwhile, a heating wire is started to heat the flexible sleeve, so that the blood can be kept in a proper temperature range in the whole blood transfusion process, and the loss of the blood temperature is effectively prevented.

The invention discloses improved ultrafiltration heat preservation equipment, and relates to the technical field of medical instruments. The improved ultrafiltration heat preservation equipment comprises an ultrafiltration pipeline, an ultrafilter and a temperature control device, the ultrafiltration pipeline comprises an infusion catheter and a liquid outlet catheter; the liquid inlet end of the ultrafilter is communicated with the infusion catheter, the liquid outlet end of the ultrafilter is communicated with the liquid outlet catheter, the infusion catheter is suitable for inputting blood into the ultrafilter, and the liquid outlet catheter is suitable for outputting the blood filtered by the ultrafilter; the temperature control device is communicated with the liquid outlet catheter and used for adjusting the blood temperature. The structure of the improved ultrafiltration heat preservation equipment is improved, the temperature control device is used for controlling the blood temperature, the blood temperature can be kept within the normal range, arrhythmia and endangering the life of a child patient due to the fact that the body temperature of the neonate is rapidly decreased after improved ultrafiltration are avoided, the safety of improved ultrafiltration is greatly improved, meanwhile, operation is simplified, and the cost is reduced. And medical personnel do not need to adopt other operations to increase the body temperature of the child patient.

An advanced system and methods for treatment of cancer and other diseases including complications from late-stage viral infections by inducing hyperthermia in a patient relying on withdrawing blood from the patient and returning the withdrawn blood to the patient to establish a continuous extracorporeal flow circuit. Blood is heated by passing through the extracorporeal circuit at a controlled rate until a target body core temperature in is achieved. An innovative concept inherent in the instant invention is the incorporation of an ECMO machine to provide oxygenation. Usually, the blood will be subjected to a continuously re-circulating dialysis to balance electrolytes. Additionally, the blood will be subjected to a continuously recirculating regeneration through a carbon sorbent column where toxins and contaminants are removed. The blood temperature is maintained at the target blood temperature for a treatment period, and the blood is cooled after the treatment period has been completed.

This invention discloses a blood temperature monitor for hemodialysis, relating to the field of blood temperature monitoring technology. The invention includes a hemodialysis machine body and a mounting base. A bracket is fixedly connected to one side of the hemodialysis machine body. A housing is disposed on the upper side of the mounting base. A temperature sensor connected to a heat-conducting element is disposed within the housing. A temperature monitoring system connected to the temperature sensor is disposed within the housing. A control panel connected to the temperature monitoring system is disposed on the outer side of the housing. This invention uses a heat-conducting element to sense temperature changes within the blood tubing in real time and transmits the temperature signal to the temperature monitoring system. After processing and analyzing the signal, the temperature monitoring system displays the current temperature value intuitively on the control panel. When the temperature exceeds a set range, it can also issue an alarm in a timely manner, effectively ensuring the safety of hemodialysis treatment.

The invention discloses an accurate temperature monitoring device for blood purification, and relates to the field of medical equipment, and the accurate temperature monitoring device is characterized in that high-precision temperature sensors of a multi-node temperature sensing assembly are respectively arranged at a blood pump outlet, a pipeline middle section and a feedback end of a blood purification pipeline; the environment temperature compensation unit is arranged on a shell of the precise temperature monitoring device for blood purification and is used for acquiring the external environment temperature in real time; the microprocessor unit is used for performing self-adaptive correction based on a dynamic compensation algorithm according to the temperature information of each point location and the external environment temperature information, and generating a temperature field model to reflect the real temperature distribution of the blood at different pipeline positions; and the intelligent early warning module triggers sound-light alarm when detecting that the blood temperature deviates from a safety range or the temperature change rate exceeds a threshold value, and sends alarm information to a nurse station terminal through the wireless communication module. The potential risk can be found in advance and quickly responded, and the safety of blood purification treatment and the comfort level of a patient are effectively improved.

The application relates to a blood temperature regulating device, method and cardiopulmonary bypass system. The device comprises a semiconductor refrigeration device in contact with a blood pipeline to be regulated in temperature. A current sensor is electrically connected with the semiconductor refrigeration device and used for collecting working current. A temperature sensor is arranged on the blood pipeline and used for collecting the actual temperature of the blood pipeline. A temperature control circuit is electrically connected with the semiconductor refrigeration device and used for providing working current for the semiconductor refrigeration device. A control module is used for determining a target voltage according to the actual temperature and a target temperature of the blood pipeline. The actual voltage of the semiconductor refrigeration device is determined according to the working current, and the temperature control circuit is controlled to adjust the amplitude and direction of the working current according to the actual voltage and the target voltage of the semiconductor refrigeration device. In summary, the device of the application regulates the temperature of the blood pipeline twice, ensures that the temperature of the blood pipeline is consistent with the target temperature, and improves the accuracy of temperature regulation of the blood pipeline.

The blood cooling device provided by the application comprises a first cooling unit, a second cooling unit, a third cooling unit and a fourth cooling unit, any one of the cooling units comprises a constant-temperature cavity, a blood pipeline arranged in the constant-temperature cavity and a composite phase change material distributed in the constant-temperature cavity, the blood cooling device provided by the application utilizes four kinds of composite phase change cold storage materials with gradient distribution of melting points, so that the blood passing through the blood cooling device is cooled in four stages, the temperature difference between the blood and the cold surface in the whole cooling process does not exceed 15 DEG C, the blood temperature before and after each stage of cooling can be fixed in a preset range, and finally the output temperature is about 4 DEG C. Since the phase change material has natural energy storage and cold storage capacity, the cold quantity can be released when needed, so that the ability of the device to cope with different working conditions and abnormal cold / heat shocks caused by factors such as faults is enhanced.

This application relates to a blood pump. The blood pump includes a pump housing and an impeller; the pump housing has a proximal opening; the impeller is rotatably disposed within the pump housing. The pump housing includes an expansion tube housing the impeller, the expansion tube comprising a first shape memory material to give the expansion tube an initial shape and an expanded shape relative to its initial shape; the first shape memory material is capable of deforming under blood temperature conditions, causing the expansion tube to expand from its initial shape to its expanded shape. The blood pump of this application can reduce hemolysis and improve the safety performance of the blood pump.

The invention relates to the technical field of medical monitoring equipment, and provides an integrated hemodialysis pipeline temperature monitoring device which comprises a shell, a battery bin is detachably connected to the lower end face of the shell, a silica gel wrist guard is fixedly connected to the lower end of the battery bin, and hook-and-loop fasteners are fixed to the two sides of the shell; a data processing module, a temperature measuring module, a heating module, a storage module, a display module, a communication module, an alarm module and a power supply module are arranged on the shell; the data processing module is used for connecting the input module and the output module to realize whole-process data processing calculation and instruction control; the temperature measuring module is used for monitoring the temperature of the bleeding pipeline, the blood return pipeline and the skin reference point; the blood flow velocity and blood return temperature synchronous monitoring and dynamic temperature return can be achieved, and the monitoring sensitivity and the use safety of a patient are both considered.

1. Name of the product in this design: Transpulmonary thermodilution catheter. 2. Purpose of this design: For measuring continuous cardiac output and other hemodynamic parameters. It can measure arterial blood pressure and blood temperature, and can also obtain arterial blood samples. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention discloses a pulsed blood pump thermal management control system based on speed modulation. The control system is configured to perform the following steps: generating an initial state vector based on historical key motor parameters, blood pump output flow rate, blood temperature, and aortic differential pressure; using a strategy network to output a speed adjustment vector based on the initial state vector, thereby controlling the motor speed; generating a current state vector based on the current key motor parameters, blood pump output flow rate, blood temperature, and aortic differential pressure, and calculating an immediate reward; updating the value network based on the state vectors at n time points and the immediate reward; and updating the strategy network based on the prediction reward error of the value network. This invention achieves temperature rise minimization under constraints such as blood pump output flow rate, blood temperature, and aortic differential pressure, ensuring that the blood pump provides stable blood flow support during long-term operation while effectively preventing adverse biological effects.

The invention relates to an integrated intelligent hemodialysis monitoring system. The system comprises a monitoring module, a main control module, a display module and an alarm module. The main control module is electrically connected with the monitoring module, the display module and the alarm module. The monitoring module comprises a blood pressure monitoring unit and a multi-mode monitoring sub-module; the multi-modal monitoring sub-module comprises a first blood path tube, a second blood path tube and a plurality of monitoring units; the monitoring module is used for collecting blood temperature, clearance rate, blood volume and blood pressure data in the hemodialysis process; and a processing control unit and an algorithm analysis unit are integrated in the main control module, and compared with the prior art, the system has the advantages of high applicability, realization of compatible upgrading of equipment, accurate risk monitoring and early warning and the like.

This invention relates to a hemodialysis heating device, comprising a processor and a temperature detection module, including: a first temperature detection module for detecting the surface skin temperature of the temporal artery; a second temperature detection module for detecting the blood temperature upon entry into the body; and a third temperature detection module for detecting the temperature of a heating element. The processor can calculate the blood thermal conductivity based on the second and third temperature data, and adjust the temperature rise of the heating element based on the difference between the first temperature data and a threshold value and the calculated blood thermal conductivity. A hemodialysis heating method includes the following steps: detecting the surface skin temperature of the temporal artery; detecting the blood temperature upon entry into the body; detecting the temperature of the heating element; and adjusting the temperature rise of the heating element based on the difference between the temperature data and a threshold value and the calculated blood thermal conductivity.

The invention discloses a continuous blood purification extracorporeal circulation pipeline heating device, and relates to the technical field of medical instruments. The blood temperature is monitored in real time through the two-way temperature sensing unit, the heating power is dynamically adjusted in combination with a PI D closed-loop control algorithm, it is ensured that the blood temperature is stably maintained in a safe physiological range, the low-body-temperature or overheating risk is effectively avoided, the core body temperature of a patient is kept stable, the original physiological state of the patient is maintained, and the low-body-temperature occurrence rate is reduced; the treatment safety is improved; the heating unit is of a spiral winding type resistance wire structure and is matched with a medical-grade flexible heat conduction material to tightly wrap a pipeline, gradient heating logic from the far end to the near end of a patient is achieved, the heat exchange efficiency is improved, and heat loss is reduced. Once the safety protection unit detects the temperature over-limit, current overload or electric leakage risk, a heating power supply is cut off immediately and an alarm is triggered; the power supply unit provides stable three-phase alternating current conversion, the intelligent control unit optimizes power output based on real-time data, and invalid energy consumption is reduced.

The application relates to a sample box for realizing blood bag and blood sample management, wherein a blood bag cavity for storing a blood bag and a blood sample cavity for storing a blood sample are arranged in the sample box, and a sampling port for taking and placing the blood sample and communicating with the blood sample cavity is arranged on the sample box. The application realizes the partition storage management of blood and blood bags, and the sampling port for taking the blood sample is arranged, so that when detection is carried out, an operator directly takes the blood sample from the sampling port, then cuts a section for detection, the blood temperature change and artificial vibration caused by the operator contacting the blood bag can be avoided, and the blood life is not affected. When the sample box is used, only the two links of initially loading the blood bag and taking out the blood bag for use are directly contacted by the operator, the blood bag is not contacted by the operator in other links, the number of times of contacting the blood bag by the operator is reduced, transmission pollution is avoided, the sample temperature change caused by hand contact is avoided, and the blood quality is better protected.

The invention relates to the technical field of hemodialysis, and discloses dialysis blood temperature monitoring equipment which comprises a blood transfusion pipeline. The liquid storage cylinder is arranged outside the blood transfusion pipeline in a sleeving manner, and the liquid storage cylinder is filled with a buffer medium; the flexible graphene heating piece is wound on the outer surface of the liquid storage barrel, a wire is installed on the flexible graphene heating piece, and the other end of the wire is connected with a temperature controller. According to the dialysis blood temperature monitoring equipment, through the water bath indirect heating and turbulent flow temperature equalization technology, the hemolysis risk caused by local overheating is thoroughly eradicated, the safety of a patient is guaranteed, and the blood temperature monitoring efficiency is improved. The double sensors cooperate to achieve precise closed-loop temperature control, it is ensured that the temperature before blood transfusion is absolute to the human body range, the short-path transfusion design effectively prevents temperature drop at the tail end, temperature stable control of the whole process from heating to human body transfusion is achieved, and treatment safety and comfort are remarkably improved.