CN221950273U - Atmospheric pressure low temperature plasma quick sterilizer - Google Patents

Abstract

The utility model discloses an atmospheric pressure low-temperature plasma rapid sterilizer, which relates to the technical field of medical devices. In order to solve the problems of long sterilization cycle and low efficiency of existing sterilization methods, potential safety hazards in the storage of sterilization gas, cumbersome sterilization process, and high cost of sterilization equipment, the following technical scheme is proposed: it includes a shell and a structural skeleton, and the structural skeleton is provided with multiple sterilization chambers, power modules, control modules, communication adapter modules, and gas delivery pipelines; the gas delivery pipeline delivers helium and oxygen to the inside of the sterilization chamber, and the high-voltage pulse power supply of the power module can ionize the gas in the sterilization chamber into low-temperature plasma to achieve the purpose of sterilization. The utility model can achieve sterilization under atmospheric pressure, and there is no safety risk of pressure vessels; the sterilizer has a compact structure, reasonable layout of each module, fast sterilization speed, high efficiency, and can reduce the total reserve of endoscopes in the hospital, thereby reducing the stagnation cost.

Description

Atmospheric pressure low temperature plasma quick sterilizer

Technical Field

The utility model relates to the technical field of medical appliances, in particular to an atmospheric pressure low temperature plasma rapid sterilizer.

Background

Sterilization of medical instruments is an important step in medical procedures, and some reusable medical instruments such as endoscopes, hemostatic clips and the like are required to be strictly and thoroughly sterilized according to standards.

The sterilization method of the medical instrument is more, the temperature of the conventional mode of pathogenic microorganism inactivation, such as the traditional pressure steam and other damp heat sterilization modes is higher, about 121.3 ℃, the medical instrument which is not resistant to high temperature cannot be sterilized, the sterilization period of the method is long, about 15-30 minutes, and the requirement of hospitals on high-efficiency sterilization of the medical instrument cannot be met; the sterilization effect is greatly affected by temperature and relative humidity by adopting an ethylene oxide sterilization mode, and meanwhile, the ethylene oxide is inflammable, explosive and toxic, and the sterilization process is necessarily carried out in a closed ethylene oxide sterilizer. On the other hand, the ethylene oxide can be used after being sterilized by ventilation, so that the use of the ethylene oxide for sterilization has potential safety hazards, and the process is complicated, and cannot meet the rapid and efficient sterilization requirements of hospitals on medical equipment.

The low-temperature disinfection and sterilization mode of the medical apparatus is that the hydrogen peroxide disinfectant is used for disinfection and sterilization. In order to improve the sterilization effect, shorten the sterilization time and reduce the sterilization cost, a vacuumizing heating mode is generally adopted to purify and gasify the hydrogen peroxide liquid and then sterilize the medical instrument, so that the equipment cost is high, the price is expensive, the medical instrument needs to be dried before sterilization, the sterilization period is longer, the sterilization efficiency is still low, and the high turnover requirement of an outpatient service on the medical instrument (such as an endoscope) cannot be met.

At present, a scheme for sterilizing medical equipment by utilizing low-temperature plasma also exists, and the method has the advantages of low sterilization temperature, no need of vacuumizing equipment, excellent sterilization effect and the like, so that the method becomes a research hot spot in the field of medical equipment sterilization. But the plasma medical instrument sterilization equipment which can meet the requirements of rapid and efficient sterilization is rare at present.

Disclosure of utility model

The utility model aims to provide an atmospheric pressure low-temperature plasma rapid sterilizer, which aims to solve the problems of long sterilization period, low efficiency, potential safety hazard in storage of sterilizing gas, complicated sterilization process and high cost of sterilization equipment in the existing sterilization mode.

The technical scheme for solving the technical problems is as follows:

an atmospheric pressure low temperature plasma rapid sterilizer comprising: the device comprises a shell and a structural framework, wherein the structural framework is arranged inside the shell;

The structure framework is respectively provided with a plurality of sterilization bins, a power supply module, a control module, a communication switching module and a gas conveying pipeline; the control module is electrically connected with the power module and is in communication connection with the communication switching module; the gas delivery pipeline delivers helium and oxygen to the inside of the sterilization bin, and the power supply module comprises a high-voltage pulse power supply which ionizes the gas in the sterilization bin into low-temperature plasma.

The beneficial effects of adopting above-mentioned technical scheme to produce are: the utility model is provided with a plurality of sterilization chambers, and an endoscope to be sterilized is placed in each sterilization chamber, so that the sterilization speed is high, the sterilization efficiency is high, the total amount of the endoscopes in hospitals can be reduced, and the stagnation cost is further reduced. The utility model connects the control parts of the sterilizer through the communication switching module and the control module, outputs the control logic of each module in real time, and realizes high-efficiency control.

Further, each sterilization bin is provided with a positive electrode and a negative electrode, and the high-voltage pulse power supply ionizes the gas between the positive electrode and the negative electrode to generate low-temperature plasma.

Further, the bottom of each sterilization bin is provided with an air inlet and an air outlet, the end part of the air inlet is provided with an air inlet valve, the end part of the air outlet is provided with an air outlet valve and a temperature pressure sensor, and the air inlet valve, the air outlet valve and the temperature pressure sensor are respectively in communication connection with the communication switching module.

Further, the gas conveying pipeline is respectively provided with a pressure transmitter and a mass flow controller which are communicated with the gas conveying pipeline, and the pressure transmitter and the mass flow controller are respectively in communication connection with the communication switching module.

Further, the gas delivery line includes a helium line and an oxygen line.

Further, a buffer bottle is arranged on the gas conveying pipeline, and the helium pipeline and the oxygen pipeline are respectively communicated with the buffer bottle.

Further, the structural framework is also provided with a printing module which is respectively in communication connection with the power module and the communication switching module.

Further, the power supply module further comprises a switching power supply, the switching power supply converts high-voltage power into low-voltage power for the sterilizer, and the switching power supply is electrically connected with the control module.

Further, an air inlet connector is arranged on the shell, helium is connected into a helium pipeline through the air inlet connector, and oxygen is connected into an oxygen pipeline through the air inlet connector.

The utility model has the following beneficial effects:

The atmospheric pressure low-temperature plasma rapid sterilizer provided by the utility model can realize sterilization under the atmospheric pressure, has small material and structure limitation on a sterilization bin, and does not have the safety risk of a pressure container; the sterilization time of each endoscope is only 5min on average, the sterilization speed is high, the efficiency is high, the total amount of the endoscopes in hospitals can be reduced, and the stagnation cost is further reduced. In addition, the sterilizer has compact structure and reasonable layout of all modules, and the sterilizer has smaller volume and more convenient use on the premise of realizing the sterilization function.

Drawings

FIG. 1 is an overall block diagram of the present utility model;

FIG. 2 is a front side view of the sterilizer of the present utility model with the housing removed;

FIG. 3 is a rear side view of the sterilizer of the present utility model with the housing removed;

FIG. 4 is an overall block diagram of the sterilization chamber of the present utility model;

The reference numerals shown in fig. 1 to 4 are respectively expressed as: 1-a housing; 11-a display screen; 12-glass door; 13-a power connector; 14-an air inlet joint; 15-a power switch; 16-flare; 17-radiating holes; 2-structural framework; a 3-power module; 31-a high-voltage pulse power supply; 32-a switching power supply; 4, a sterilizing bin; 41-bin top cover; 42-an air inlet valve 43-an air outlet valve; 44-a bin housing; 45-a temperature and pressure sensor; 5-a control module; 51-a first control module; 52-a second control module; 6-a communication switching module; 7-a pressure transmitter; 8-mass flow controller; 9-a printing module.

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

Referring to fig. 1-3, the present utility model provides an atmospheric pressure low temperature plasma rapid sterilizer, comprising: the device comprises a shell 1, a structural framework 2, a power module 3, a sterilization bin 4, a control module 5, a communication switching module 6, a printing module 9, a gas conveying pipeline, an alarm device, a cabin door self-locking device and a display screen 11, wherein the power module 3 comprises a high-voltage pulse power supply 31 and a switching power supply 32, the switching power supply 32 is used for converting 220V commercial power into 5V, 12V and other voltage power supplies, and the high-voltage pulse power supply 31 is used for converting 220V commercial power into high-voltage pulse power so as to ionize helium and oxygen mixed gas for the printing module 9, the display screen 11 and other modules. The communication switching module 6 transmits the information sent by each module (for example, the pressure transmitter 7, the temperature and pressure sensor 45, etc.) to the control module 5, and the modules communicate by adopting an RS485 communication mode. The printing module 9 is used for printing sterilization data (for example, sterilization time, sterilization effect detection result, etc.) after sterilization is completed.

Referring to fig. 2-3, a casing 1 is disposed outside a structural framework 2, an air inlet connector 14, a power connector 13, a power switch 15, a bell mouth 16 and a heat dissipation hole 17 are disposed on the casing 1, helium and oxygen are connected into a helium pipeline and an oxygen pipeline from the air inlet connector 14, a pressure transmitter 7 and a mass flow controller 8 are respectively and sequentially disposed on the helium pipeline and the oxygen pipeline, the pressure transmitter 7 is used for detecting gas pressure, detection information is sent to a control module 5 through a communication switching module 6 in an RS485 communication manner, and the mass flow controller 8 is used for controlling air inflow; the commercial power is connected into the sterilizer through the power connector 13, and the power supply of the whole sterilizer is controlled to be turned on or off through the power switch 15; the heat dissipation holes 17 are arranged near the high-voltage pulse power supply and are used for helping heat dissipation of the power supply and avoiding damage of the power supply due to overhigh temperature; various alert sounds during sterilization are emitted from the horn mouth 16.

Referring to fig. 2-3, the structural framework 2 is divided into a front part and a rear part, the front part is provided with a plurality of sterilization bins 4 side by side, the rear part is divided into a plurality of layers in the vertical direction, the printing module 9, the pressure transmitter 7, the mass flow controller 8 and the buffer bottle are arranged at the uppermost layer, the switching power supply 32 and the communication switching module 6 are arranged at the second layer, the control module 5 is arranged at the third layer, and the high-voltage pulse power supply 31 is arranged at the bottom layer. The control module 5 is used as a control center of the sterilizer, is electrically connected or in communication with each module in the sterilizer, is responsible for receiving and processing data sent by each module, and outputs the control logic of each module in real time, the control module 5 comprises a first control module 51 and a second control module 52, the first control module 51 is responsible for processing top-layer data, the data transmission and control of the modules including the display screen 11 and the like, and the second control module 52 is responsible for hardware control, such as excitation of the high-voltage pulse power supply 31 and the like.

The gas conveying pipeline comprises a helium pipeline and an oxygen pipeline, the two pipelines are connected with the buffer bottle, helium and oxygen are fully mixed in the buffer bottle and then are introduced into each sterilization bin 4 from the air inlet of each sterilization bin 4, an endoscope to be sterilized is placed in each sterilization bin 4, and the high-pressure pulse energy generated by the high-pressure pulse power supply 31 excites helium and oxygen mixed gas to generate low-temperature plasma, so that the endoscope is sterilized. The display 11 is used for displaying various information during sterilization, such as gas usage, gas pressure, etc.

Referring to fig. 3 to 4, the sterilization chamber 4 includes an upper cover 41, an air inlet valve 42, an air outlet valve 43, a chamber housing 44 and a temperature and pressure sensor 45, wherein an air inlet and an air outlet are provided at the bottom of each sterilization chamber 4, the air inlet valve 42 and the air outlet valve 43 are respectively disposed near the air inlet and the air outlet, and the air inlet valve 42 and the air outlet valve 43 are specifically electromagnetic valves. A temperature and pressure sensor 45 is arranged near the exhaust port of each sterilization bin 4 and is used for detecting the temperature and pressure conditions of the exhaust gas, and the detection result is sent to the control module 5 through the communication switching module 6 in an RS485 communication mode. The sterilization bin 4 is provided with a positive electrode and a negative electrode, specifically, the sterilization bin 4 comprises a cavity, the positive electrode comprises a hollowed-out electrode arranged on the upper side inside the sterilization cavity and an endoscope, and the negative electrode is copper foil arranged on the outer wall of the cavity. A status indicator light is provided at each sterilization chamber 4 for indicating the current sterilization status of the sterilization chamber 4, for example, red when sterilization is being performed and green when sterilization is completed. In addition, the sterilizing chambers 4 are provided with glass doors 12 on the sterilizer in addition to the sealed chamber upper covers 41, respectively, for isolating the sterilizing chambers 4 from the outside, thereby further ensuring the safety of personnel operation. Further, the sterilizer is also provided with a gating device for detecting and controlling the closing of the glass door 12.

The alarm device comprises a voice broadcasting device and a visual alarm device, wherein the voice broadcasting device is specifically a broadcasting horn and is used for broadcasting error information; the visual alarm device is specifically a display screen 11, and the control module 5 outputs error information and displays the error information on the display screen 11.

In addition, a moving part, which can be a universal wheel specifically, is further arranged at the bottom of the structural framework 2, so that the movement of the instrument is facilitated.

The sterilization working principle of the sterilizer of the embodiment is as follows:

Firstly, placing endoscopes to be sterilized into each sterilization bin 4 respectively, closing a bin upper cover 41 and a glass door 12, introducing a preset amount of helium and oxygen from an air inlet joint 14, and opening a power switch 15;

Secondly, the high-voltage pulse power supply 31 generates steep pulse energy, and the helium and oxygen mixed gas is ionized in the sterilization bin 4 to generate plasma, so that the plasma thoroughly sterilizes the endoscope;

Finally, after sterilization is completed, the indicator light is displayed as green, the voice broadcasting device broadcasts sterilization completion information, and the printing module 9 prints out a sterilization result. The system is configured to sterilize the endoscopes of each sterilization chamber 4 in sequence, taking 5 minutes per endoscope on average, and about 30 minutes for all 6 sterilization chambers 4 to be completely sterilized.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. An atmospheric pressure low temperature plasma rapid sterilizer, comprising: the device comprises a shell (1) and a structural framework (2), wherein the structural framework (2) is arranged inside the shell (1);

The structure framework (2) is respectively provided with a power supply module (3), a plurality of sterilization bins (4), a control module (5), a communication switching module (6) and a gas conveying pipeline; the control module (5) is electrically connected with the power module (3), and the control module (5) is in communication connection with the communication switching module (6); the gas conveying pipeline conveys sterilizing gas into the sterilizing bin (4), the power module (3) comprises a high-voltage pulse power supply (31), and the high-voltage pulse power supply (31) ionizes the sterilizing gas in the sterilizing bin (4) into low-temperature plasma.

2. Atmospheric pressure low temperature plasma rapid sterilizer according to claim 1, characterized in that each of the sterilization chambers (4) is provided with a positive electrode and a negative electrode, and the high voltage pulse power supply (31) ionizes the gas between the positive electrode and the negative electrode to generate low temperature plasma.

3. The atmospheric pressure low temperature plasma quick sterilizer according to claim 2, wherein the bottom of each sterilization bin (4) is provided with an air inlet and an air outlet, the end part of the air inlet is provided with an air inlet valve (42), the end part of the air outlet is provided with an air outlet valve (43) and a temperature pressure sensor (45), and the air inlet valve (42), the air outlet valve (43) and the temperature pressure sensor (45) are respectively in communication connection with the communication switching module (6).

4. Atmospheric pressure cryogenic plasma rapid sterilizer according to claim 2, characterized in that each of the sterilization chambers (4) comprises a chamber, the positive electrode being a hollowed-out conductive structure arranged on the upper side inside the chamber and the endoscope itself to be sterilized.

5. The atmospheric pressure low-temperature plasma quick sterilizer according to claim 1, wherein a pressure transmitter (7) and a mass flow controller (8) which are communicated with the gas conveying pipeline are respectively arranged on the gas conveying pipeline, and the pressure transmitter (7) and the mass flow controller (8) are respectively in communication connection with the communication switching module (6).

6. The atmospheric pressure cryogenic plasma rapid sterilizer of claim 1, wherein the sterilizing gas is helium and oxygen, and the gas delivery line comprises a helium line and an oxygen line.

7. The rapid atmospheric pressure cryogenic plasma sterilizer of claim 6, wherein the gas delivery line is provided with a buffer bottle, and the helium line and the oxygen line are respectively in communication with the buffer bottle.

8. The atmospheric pressure low temperature plasma quick sterilizer according to claim 1, wherein the structural framework (2) is further provided with a printing module (9), the printing module (9) is electrically connected with the power module (3), and the printing module (9) is in communication connection with the communication switching module (6).

9. The atmospheric pressure low temperature plasma rapid sterilizer according to claim 1, wherein the power supply module (3) further comprises a switching power supply (32), the switching power supply (32) converts 220V alternating current into a low voltage for the sterilizer, and the switching power supply (32) is electrically connected with the control module (5).

10. The atmospheric pressure low temperature plasma quick sterilizer as claimed in claim 6, wherein the housing (1) is provided with an air inlet joint (14), helium is connected into a helium pipeline through the air inlet joint (14), and oxygen is connected into an oxygen pipeline through the air inlet joint (14).