RU2333008C1 - Steriliser (versions) - Google Patents

Abstract

FIELD: medical equipment.

SUBSTANCE: steriliser contains a working chamber with a tight cover, heating elements and a case wherein heat-carrier feed and discharge pipelines are placed, electromagnetic valves and control facilities. Pipelines feeding water and air in to the working chamber with the water heat-carrier, as well as top and bottom plum pipelines are supplied with manual gates. The case is made in the form of a box with a door. In the first variant of the steriliser on a door there are gauges indicating position of handles of the gates and connected to an interlock, the manual gates being installed so that their handles in the closed position, interact with the position gauges. In the second variant of the steriliser, the door is equipped with retainers interacting with handles of manual gates at their open position.

EFFECT: better reliability of sterilisation; simplification and reduction of the steriliser dimensions.

2 cl, 5 dwg

Description

The claimed technical solution relates to medicine, namely to devices for sterilization, and can be used to sterilize solutions of drugs in glass containers in pharmacies with their small-scale and one-time manufacture.

Known medical sterilizer containing a housing with a lid, a sterilizing liquid heater, a chamber for accommodating sterilized objects, temperature level sensors, as well as a control system (see RF patent No. 2000810 MKI A61L 2/04).

The specified sterilizer cannot be used to sterilize vessels with solutions, since its design and sterilizing liquid - glycerin provide heating to 290 ° C at normal pressure (~ 1 atm.), And the pressure drop inside the heated vessel with the solution and in the chamber leads to its destruction.

There are various steam sterilizers containing a sealed working chamber, a steam generator, means for supplying steam and a cooling medium, control elements, pressure regulators, heating, cooling and control systems (see, for example, RF patents for inventions Nos. 2059374, 2150872, MKI A23L 3 / 10; AS No. 1289442, MKI A23L 3/10, AS No. 1080808, MKI A23L 3/00).

Such devices are quite complex and are usually used in serial production of various kinds of canned food in the food industry. When using steam sterilizers to sterilize medical solutions in glass vessels, their safety is not guaranteed, because condensation formed in the working chamber when it enters the glass causes a local temperature drop, which often leads to destruction of the vessel.

Known medical sterilizer containing a working chamber with a sealed cover, heating elements and a housing in which are placed the coolant supply piping, electromagnetic valves and controls, including a manual remote control in case of emergency (see RF patent No. 2156622, MKI A61L 2/00, 2/06, taken as a prototype).

The known sterilizer is a steam sterilizer, the working chamber of which is located in the enclosing housing, in which in addition to the above nodes are a steam generator, a water condensation system, a pressure equalization system and a cooling system, which makes it difficult, expensive and suitable for operation only in large-scale production. In addition, it is not reliable enough when sterilizing solutions in a glass container, and manual control of the heating intensity alone is not enough to eliminate this drawback.

The purpose of the proposed technical solution is to create an economical device that provides more reliable, non-vascular destroying sterilization of drug solutions while simplifying and reducing its size, which will allow it to be used in a network of pharmacies for small-scale and one-time preparation of a number of medicines.

This goal is achieved by two options for the implementation of the sterilizer.

According to the first embodiment, in a sterilizer containing a working chamber with a sealed cover, heating elements and a housing in which coolant supply and removal pipelines, solenoid valves and controls are located, the housing is made in the form of a box with a door, water and air supply pipelines to the working chamber with water coolant, as well as pipelines of the upper and lower drain are equipped with manual valves, and on the door there are sensors for the position of the valve handles connected to the blocking device, while manual ntili established to engage their handles in the closed position with the position sensors.

In the second embodiment, in a sterilizer containing a working chamber with a sealed cover, heating elements and a housing in which coolant supply and removal pipelines, solenoid valves and controls are located, the housing is made in the form of a box with a door, water and air supply pipelines to the working chamber with water coolant, as well as the upper drain and lower drain pipelines are equipped with manual valves, and on the door there are stops made with the possibility of interaction with the corresponding open handles tiley.

The use of coolant in the proposed sterilizer - water, avoids the destruction of glass containers due to condensate getting on it and simplifies the device, however, due to the specifics of the application (sterilization of expensive drugs), if the automatic control system fails, it is necessary to manually complete the sterilization process to the end, while maintaining the automatic regime, and in some situations, preserving expensive drugs from destruction, by gradually cooling the product manually.

The need for manual mode determines the presence of manual valves, the valves of which must be guaranteed to be closed during operation in automatic mode, as under-closing of any valve dramatically changes the sterilization parameters and can lead to a failure of the cycle.

The proposed set of structural elements and their relative position allows to increase the reliability of sterilization by eliminating the possibility of sterilization in automatic mode with unclosed manual valves.

In the variant with the position sensors of the valve handles on the door, the power is blocked when the manual valves are not closed, and in the variant with the stops on the door, the operator is informed of the unclosed manual valves if it is impossible to close the door tightly.

The drawing shows embodiments of the sterilizer, where Fig.1, 2 is an embodiment of a sterilizer with sensors on the door (Fig.1 is a side view, Fig.2 is a front view), Fig.3, 4 is an embodiment of a sterilizer with stops on the door (figure 3 is a side view, figure 4 is a top view), figure 5 shows the position of the stops when the door is closed and not closed.

The sterilizer contains a working chamber 1, equipped with a sealed cover 2 with a bayonet lock 3. The cover 2 is connected with the lifting mechanism 4. In the working chamber 1 there is a pressure sensor 5, a water level sensor 6, a temperature sensor 7. At the bottom of the working chamber 1 there are heating elements 8 , for example, heating elements. A duct 9 with a door adjoins a working chamber 1. Inside the duct 9, pipelines for supplying water 11, air 12, an upper drain 13, and a lower drain pipe 14 are placed vertically. Manual valves 15 with handles 16 are installed in all pipelines. Handles 16 of valves 15 in the closed state, they are located perpendicular to the plane of the closed door 10. In the first embodiment, position sensors 17 are placed on the door 10 opposite the closed handles 16, which are connected to the blocking device 18 connected to the control means 19 or to the power supply unit (not shown it turned out).

As position sensors 17 (Fig.1, 2) can be used Hall sensors, limit switches or optocouplers. The locking device 18 can be performed, for example, in the form of a polling unit (circuit I) connected to the controls 19.

In the second embodiment, the sterilizer on the door 10 opposite the handles 16 made stops 20 (figure 3, 4, 5), the dimensions of which are not fully closed valves (see figure 5), when the valve handle is in a position other than horizontal, do not allow to completely close the door, as emphasis comes across a handle.

The sterilizer works as follows. After loading the working chamber 1 with water containers, pour water into it through the pipe 11 and tightly close the lid 2 with the bayonet lock 3. Tightly closing the door 10, turn on the control tool 19, which ensures that the sterilization process is carried out in automatic mode.

Option 1. If the door 10 is tightly closed, the signals from all position sensors 17 are fed to a blocking device 18, which, in the presence of signals from all sensors, generates a signal that starts the control means 19. If any manual valve 15 is not fully closed, its handle 16 is not located opposite the corresponding position sensor 17. The signal is not generated by such a sensor and the blocking device 18 does not unlock the control means 19. If necessary, the transition to manual control opens the door 10. This happens blocking the automatic mode, and by manipulating the manual valves 15 provide cooling of the sterilized vessels with drugs.

Option 2. Before starting to turn on the control means 19, the operator closes the door 10. A tightly closed door 10 informs the operator about the possibility to start work in automatic mode. If all of the manual valves 15 or any of them are not fully closed, when the door 10 is turned, the stops 20 will interact with the handles 16 and abut against them, preventing the door 10 from closing. Thus, the tightly closed door 10 informs the operator of the unclosed manual valves, that is, the inability to start work in automatic mode.

In the process of controlling the operation of the sterilizer in manual or automatic mode, if necessary, increase the pressure through the air supply pipe 12, air is supplied by opening the manual valve 15 or by turning on the corresponding electromagnetic valve (not shown in the drawing). Pressure reduction is provided by a manual valve 15 or by switching on the corresponding electromagnetic valve of the upper drain pipe 13. Sterilization is provided by periodically switching on the heating elements 8 to compensate for the process of heat loss through the walls and the lid of the working tank and maintain the desired sterilization temperature.

Cooling is provided by alternately dosing the appropriate valves or solenoid valves to supply cold water and discharge excess (hot) water through pipelines 11 and 13.

Claims (2)

1. A sterilizer containing a working chamber with a sealed lid, heating elements and a housing in which pipelines for supplying and discharging the coolant, electromagnetic valves and control means, characterized in that the housing is made in the form of a box with a door, pipelines for supplying water and air to the working the chamber with the water coolant, as well as the upper and lower drain pipelines are equipped with manual valves, and on the door there are sensors for the position of the valve handles connected to the blocking device, while manual The vents are installed with the possibility of interaction of their handles in a closed state with position sensors. 2. A sterilizer containing a working chamber with a sealed lid, heating elements and a housing in which pipelines for supplying and discharging a coolant, electromagnetic valves and control means, characterized in that the housing is made in the form of a box with a door, pipelines for supplying water and air to the working the chamber with the water coolant, as well as the upper drain and lower drain pipelines are equipped with manual valves, and on the door there are stops made with the possibility of interaction with the corresponding handles open in entile.

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