RU163549U1 - DEVICE FOR INFLUSION OF STERILE INFUSION SOLUTIONS IN BLOOD AND NATURAL HUMAN CAVITIES - Google Patents

Abstract

1. A device for pouring sterile infusion solutions into the blood and natural cavities of a person, comprising a housing with a peristaltic pump and a heating element with a clamp for the infusion tube, characterized in that it contains temperature sensors for constant monitoring of the temperature of the injected sterile infusion solution and a control module by which through the controllers, the temperature and flow rate of the injected solution are regulated. 2. The device according to claim 1, characterized in that the control module operates in automatic mode in accordance with a given program.

Description

The present technical solution (utility model) relates to the field of medical technology, and more specifically to devices for injecting sterile infusion solutions, blood and blood substitutes directly into the blood and natural cavities of a person during intensive care and resuscitation, during surgery, in the postoperative period.

The most promising areas of application:

- in the conditions of warfare;

- in emergency situations and incidents;

- at low temperatures, in the conditions of the Far North;

- in the provision of emergency and emergency care.

The temperature of sterile solutions for infusion therapy, as a rule, is equal to the ambient temperature of the room where they are stored, and is 16 ° C-24 ° C depending on the season. The only exceptions are solutions that are stored in refrigeration units, where the temperature is much lower. The use of sterile infusion solutions having a low temperature (below the human body temperature) leads to peripheral vasospasm and a decrease in peripheral blood flow, which leads to a decrease in the delivery of oxygen and nutrients to tissues. Under certain circumstances (blood loss, hypothermia), it becomes necessary to inject solutions into the blood stream at a certain speed, which cannot be achieved using a conventional “dropper”, where the infusion rate is limited by gravity. In such cases, the use of solution volume dispensers is very important.

From the current level of technology there are known systems for infusion of infusion solutions, which are widespread in medical practice, simply referred to as “droppers”. In them, the rate of infusion of infusion solutions is carried out under the action of gravity, due to the water column formed when the dropper is placed in an upright position above the patient. Despite the fact that this design is simple, it also has a number of disadvantages, namely it can only work in stationary conditions, since it requires fixing over the patient in a strictly vertical position and at a certain height; requires constant monitoring by the medical staff of the liquid level in the dropper vessel, as if it is completely emptied, air can enter the vein.

A device for warming infusion solutions, consisting of a vertical container of plastic, located between two electric heating plates (France, patent No. 2403083, IPC A61M 5/14, 1997). The disadvantages of this technical solution are the impossibility of uniform heating of the sterile solution due to the small contact area of the heater and the tube, the inability to maintain a constant temperature when the infusion rate of the solution changes.

A device for heating sterile infusion solutions is known, in which the flow heater is made in the form of several rigid removable modules in canisters mounted on the infusion solution hose (Russia, Patent No. 2093195, IPC A61M 5/14, 1998). The disadvantages of the device include: the inability to monitor the condition of the tube in which the solution passes, with the aim of early detection or prevention of air bubbles entering the human blood (prevention of iatrogenic air embolism); the absence of a malfunction signal for modules and temperature sensors, which can lead to a decrease in the effectiveness of the therapy or overheating of the liquid, and tragic changes in the protein structures of the blood and transfused solutions.

A device for infusion therapy, designed to heat solutions administered intravenously (Russia, patent No. 2285544, IPC A61M 5/14, 2004), which contains a heat exchanger, an automatic thermostat, a circulation pump and a standard sterile system for blood transfusion, including a dropper , flow regulator, infusion hose passed through the upper and lower sealing connectors of the heat exchanger filled with liquid heat carrier. The cold solution coming from the bottle through the dropper and flow regulator acquires the temperature of the coolant and enters the injection needle. The disadvantage of this technical solution is the inconvenience in operation due to the presence of a stationary thermostat and a large number of tubes - channels for pumping a liquid coolant; the complexity of preparation for work and the lack of mobility due to the large volume of coolant; large heat loss in the channels of the pumping liquid coolant outside the heat exchanger.

A common disadvantage of the above devices for heating sterile infusion solutions is that, among other things, they do not allow intravascular or intracavitary administration of a solution with an adjustable infusion rate.

Closer to the proposed device according to the method of fluid infusion, are the so-called infusion pumps (infusomats), which are designed to infuse solutions of drugs in small doses for a long time. The disadvantages of infusion pumps are the low infusion rate, the use of small volumes of solutions for administration and the absence of a heating unit for heating the solution to body temperature.

A peristaltic pump containing a stator, with an elastic tube adjacent to its inner surface, a rotor with rollers located in the stator cavity, is known from the prior art, and a roller pump comprising a housing with a bed is located in the stator cavity with rollers (RF patent N 2014042, cl. located inside it with an elastic tube, a rotor with pressure rollers and a device for clamping an elastic tube (ed. St. N 1560225, class A61M 1/10, 1991), which are used to infuse liquid media into the human body. The disadvantages of this technical solution is that in these pumps there is no way to control the temperature of the infused fluid and change it depending on medical needs.

The last copyright certificate is taken as a prototype.

The problem to which the claimed technical solution (utility model) is directed is to expand the arsenal of technical means in this area, as well as to create portable compact equipment that provides both metered heating and the injection of sterile infusion solutions into the blood or natural human cavities.

This problem is solved due to the fact that the device for heating and infusion of a sterile infusion solution contains a housing including a pump for infusion of a solution, a heater that is connected to the housing by a movable or fixed connection, a data input module equipped with a keyboard, a data output module equipped with a liquid crystal display as well as temperature sensors for constant monitoring of the temperature of the injected sterile infusion solution with the option of emergency shutdown of the heater (device) when critical other temperature of the solution; moreover, the functioning of the heater and the pump of the device are interconnected and coordinated by the control module, including in automatic mode in accordance with the specified program.

The technical result provided by the given set of features is the simultaneous use of a heater and a pump for dosed infusion of a solution into the blood or natural cavity of a person; compactness and mobility of the device, allowing its use in mobile systems; energy saving due to the use of small energy sources in the device.

The device is illustrated in the figure, which shows a device for pouring sterile solutions into the blood or natural cavity of a person.

A device for pouring sterile solutions into the blood or natural cavities of a person includes a housing 1 with a heater 2, which is designed to heat a sterile solution located in a sterile tube 3 for infusion infusion and a peristaltic pump 4 for pouring a heated sterile solution at a certain rate into the blood or natural cavities person. As a heater, a spiral-like heating element with a retainer 5 for a sterile tube is used, which is necessary to create uniform heating of the solution. The heater is mounted on the housing. A peristaltic pump is installed on the housing, and pumps a sterile infusion solution 6 from a container for storing a sterile infusion solution 7 through a sterile tube through a heater into the blood or natural human cavities. The rate of introduction of the solution and its temperature is set depending on the tasks with the settings buttons 8, and is regulated by the control module 9 through the controllers. The temperature control of the solution coming from the solution storage tank and passing through the sterile tube before and after it is heated in the heater is carried out by the temperature sensors 10. The current temperature readings from the temperature sensors are reflected on the monitor 11 of the control module. The control module of the device regulates the temperature of the solution and its infusion rate through the controllers, keeping them stable within the specified parameters, and also coordinates the operation of the device as a whole.

The device for infusion of sterile infusion solutions as an input module can be equipped with a push-button or touch keyboard (not shown in the figure).

In the device for infusion of sterile infusion solutions, a compact heating element can be used as a heater, which is connected to the device body by a movable connection.

In the device for infusion of sterile infusion solutions, a peristaltic pump can be used as a pump, which is able to pump the solution through a tube while maintaining its sterility and to regulate the rate of infusion of the solution.

The data output module may be an anti-reflective color liquid crystal display.

The device operates as follows. During transportation and storage, the device is folded in a special bag. In case of use, the device is removed from the bag and mounted on a tripod or mounted on bedside devices. First, the infusion tube for the sterile infusion solution is connected to the storage capacity of the infusion solution. Then it is fixed in the clamping device of the peristaltic pump, after which it is put on and fixed on the heater. Using a temperature sensor, the temperature of the solution is automatically determined before heating (in fact, the temperature of the solution in the solution storage tank) and after heating in the heater, i.e. the temperature at which the solution is poured directly into the lumen of the vessel or the natural cavity of a person. The sterile infusion solution in the tube is heated to a temperature of no more than 42 ° C. The set temperature and the rate of infusion of the sterile infusion solution are set using the keyboard of the data input module. Indications of temperature and rate of infusion of the solution are reflected on the liquid crystal display. Changing the temperature of a sterile infusion solution and the speed of its infusion is possible in manual and automatic mode. When working in automatic mode, a program is selected that controls the device already with the specified heating parameters and the rate of infusion of the solution. If the temperature of the solution at the outlet of the heater reaches more than 42 ° C, then, by the signal of the temperature sensor, the electronic unit will sound an alert and shut off the heater and the entire device. After finishing work, the device turns off and stays in the bag for storage and transportation.

The inventive device has, in comparison with the prototype, several advantages: it is more compact, mobile, simpler and more convenient to use. The device is a portable, easily portable device. It can be widely used both in hospital hospitals (in intensive care units, therapies, surgery, traumatology, burn centers, etc.), and in cars and ambulances, in mobile medical complexes to provide effective medical care in the field and extreme situations.

Claims (2)

1. A device for pouring sterile infusion solutions into the blood and natural cavities of a person, comprising a housing with a peristaltic pump and a heating element with a clamp for the infusion tube, characterized in that it contains temperature sensors for constant monitoring of the temperature of the injected sterile infusion solution and a control module by which through the controllers, the temperature and flow rate of the injected solution are regulated. 2. The device according to p. 1, characterized in that the control module operates in automatic mode in accordance with a given program.

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