An efficient ethylene oxide sterilizer

Abstract

The utility model discloses a kind of efficient ethylene oxide sterilizers, and the sterilizer box is equipped with sterilization cavity, heating device is equipped on the outer wall of sterilization cavity, draws negative pressure device, humidifying device and dosing device, the left side cavity wall of sterilization cavity is equipped with stainless steel baffle at medicine outlet, stainless steel baffle is heated with sterilization cavity synchronously to promote ethylene oxide gasification, and ethylene oxide is controlled to release slowly, the front of sterilization cavity is equipped with cavity door, cavity door is hinged with sterilizer box, the contact of two is equipped with convex sealing ring, the convex surface of convex sealing ring is arched, the utility model changes direct-through type nozzle dosing mode to indirectly dosing mode of adding stainless steel baffle, control medicament diffusion speed by stainless steel baffle, use convex sealing ring instead of concave sealing ring, ensure equipment airtightness by convex sealing ring, both can protect instrument, reduce residue, improve sterilization effect, can also prevent cavity door jamming and sealing ring damage, facilitate user use, improve equipment durability, with wide application prospect.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a high-efficiency ethylene oxide sterilizer. Background Technology

[0002] Currently, low-temperature sterilization equipment is increasingly widely used in the medical technology field, and ethylene oxide, with its unique physicochemical properties, has become an ideal sterilizing agent. Ethylene oxide is a broad-spectrum sterilizing agent that can kill various microorganisms at room temperature, including spores, tubercle bacilli, bacteria, viruses, and fungi. Since the application of ethylene oxide sterilization technology, it has been the preferred method for low-temperature sterilization, and ethylene oxide sterilizers have been more widely used. However, traditional ethylene oxide sterilizers still have the following problems during use: the puncture injection system generally adopts a straight-through nozzle design, characterized by the puncture needle directly piercing the ethylene oxide aerosol can during drug addition, and the drug being sprayed directly into the sterilization chamber through a straight-through pipe with a diameter of 2-3 mm. When the aerosol can is punctured, ethylene oxide is sprayed directly into the chamber at high speed from the injection port. This rapid release method leads to three main problems: first, the ejected ethylene oxide may impact and damage the items being sterilized; second, ethylene oxide splashes within the chamber, easily leaving residues on instrument surfaces and chamber walls; and third, due to the excessively rapid release rate, the sterilizing solution cannot be fully vaporized, affecting the sterilization effect. Additionally, existing sealing rings mostly use concave sealing rings (such as...). Figure 5 As shown, concave sealing rings have two main problems in practical use: First, during the vacuuming stage, the sealing ring can be excessively squeezed and deformed by the door panel, potentially causing the chamber door to jam after the sterilization cycle, requiring manual intervention to open. Second, the exposed groove edge is easily bumped and scratched when loading instrument baskets, resulting in damage to the sealing ring, reduced chamber sealing performance, and low durability. Therefore, there is an urgent need to develop a high-efficiency ethylene oxide sterilizer to solve the above technical problems.

[0003] In view of the above, this utility model is hereby proposed. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency ethylene oxide sterilizer that replaces the direct-flow nozzle dosing method with an indirect dosing method using a stainless steel baffle. The stainless steel baffle controls the diffusion rate of the reagent, and a convex sealing ring replaces a concave sealing ring. The convex sealing ring ensures the airtightness of the equipment, which not only protects instruments, reduces residue, and improves sterilization effect, but also prevents the chamber door from jamming and the sealing ring from being damaged. It is convenient for users, improves the durability of the equipment, has broad application prospects, and is conducive to its widespread application.

[0005] To achieve the above objectives, this utility model provides a high-efficiency ethylene oxide sterilizer, comprising a sterilizer housing and a control system for controlling the operation of the entire sterilizer. The sterilizer housing contains a sterilization chamber, and the outer wall of the sterilization chamber is equipped with a heating device, a negative pressure device, a humidification device, and a dosing device. A stainless steel baffle is provided at the dosing outlet on the left side of the sterilization chamber wall. The stainless steel baffle is heated synchronously with the sterilization chamber to promote ethylene oxide vaporization and control the slow release of ethylene oxide. The top and both sides of the stainless steel baffle are equipped with enclosures. The inner side of the enclosures is equipped with a puncture dosing port, a splash guard, a V-shaped baffle, and a filter plate. The puncture dosing port serves as the dosing nozzle after the aerosol can is punctured and communicates with the dosing outlet on the chamber wall. The V-shaped baffles are located below the puncture dosing ports. There are six V-shaped baffles, with their openings facing upwards, arranged in a triangular pattern, with one, two, and three baffles at the top, middle, and bottom respectively. The splash guard is located above the puncture dosing ports, arranged in an n-shape, with its opening facing downwards. The sterilization chamber is surrounded by the puncture outlet and the top V-shaped baffle. A filter plate is located below the V-shaped baffle and connects to the side barriers. The filter plate has several evenly distributed filter holes. When ethylene oxide is ejected from the puncture outlet, the splash guard guides the ethylene oxide into the V-shaped baffle, which forms a buffer barrier for the ethylene oxide. After being buffered by the V-shaped baffle, the ethylene oxide is evenly released into the chamber through the filter holes. A chamber door is located at the front of the sterilizer body, and the chamber door is hinged to the sterilizer housing. Next, a convex sealing ring is provided at the contact point between the two. The convex surface of the convex sealing ring is arched. When the cavity door is locked, the convex sealing ring is squeezed, which forces the convex surface structure to undergo slight deformation, so that a larger contact surface is generated between the cavity door and the convex sealing ring, thereby achieving surface sealing and improving the sealing performance of the sterilization cavity during the operation of the sterilizer. After sterilization, the sterilization cavity is depressurized and the cavity door is unlocked. The convex surface structure of the convex sealing ring returns to its deformation, slightly lifting the cavity door and ending the sealed state of the sterilization cavity.

[0006] Preferably, the included angle of the V-shaped baffle is 120-160°.

[0007] Preferably, there are two puncture sites for drug delivery, arranged vertically one above the other.

[0008] Preferably, the front of the housing is provided with a human-machine interface and a recording printer.

[0009] Preferably, the convex sealing ring is square with rounded corners.

[0010] Preferably, the convex sealing ring is fixed to the sterilizer housing.

[0011] Preferably, the sterilizer housing is provided with a sealing ring groove, and the convex sealing ring is embedded in the sealing ring groove.

[0012] The present invention provides a high-efficiency ethylene oxide sterilizer, which has the following beneficial effects.

[0013] 1. The stainless steel baffle of this utility model is designed so that when ethylene oxide is sprayed from the puncture outlet, the splash guard guides the ethylene oxide to the V-shaped baffle. The V-shaped baffle forms a buffer barrier for the ethylene oxide. After being buffered by the V-shaped baffle, the ethylene oxide is evenly released into the cavity through the filter holes, which can protect the instrument, reduce residue, and improve the sterilization effect.

[0014] 2. The convex sealing ring of this invention significantly improves the sealing performance and user experience of the sterilizer. When the chamber door is locked, the convex sealing ring is compressed, forcing a slight deformation of the convex structure, creating a larger contact surface between the chamber door and the convex sealing ring, thereby achieving surface sealing and improving the sealing performance of the sterilization chamber during operation. After sterilization, the sterilization chamber is depressurized and the chamber door is unlocked. The convex structure of the convex sealing ring returns to its original deformation, slightly lifting the chamber door and ending the sealed state of the sterilization chamber. The automatic door opening is smooth, preventing the chamber door from jamming and the sealing ring from being damaged, making it convenient for users and improving the durability of the equipment. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a high-efficiency ethylene oxide sterilizer provided by this utility model;

[0016] Figure 2 A schematic diagram of a stainless steel baffle structure for a high-efficiency ethylene oxide sterilizer provided by this utility model;

[0017] Figure 3 A schematic diagram of a convex sealing ring structure for a high-efficiency ethylene oxide sterilizer provided by this utility model;

[0018] Figure 4 A cross-sectional view of a convex sealing ring for a high-efficiency ethylene oxide sterilizer provided by this utility model;

[0019] Figure 5 This is a cross-sectional view of a concave sealing ring in the prior art.

[0020] In the picture:

[0021] 1. Sterilizer body 2. Sterilization chamber 3. Control system 4. Chamber door 5. Stainless steel baffle 501. Puncture outlet 502. V-shaped baffle 503. Filter plate 504. Splash guard 505. Enclosure 506. Filter hole 6. Convex sealing ring 601. Rounded 7. Chamber wall outlet 8. Human-machine interface 9. Recorder / printer Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments and accompanying drawings to help understand the content of the present invention.

[0023] like Figure 1The diagram shown is a structural schematic of a high-efficiency ethylene oxide sterilizer provided by this utility model. The high-efficiency ethylene oxide sterilizer includes a sterilizer housing 1 and a control system 3 that controls the operation of the entire sterilizer. The sterilizer housing 1 contains a sterilization chamber 2. The outer wall of the sterilization chamber 2 is equipped with a heating device, a negative pressure device, a humidification device, and a dosing device (these four devices are prior art and are not shown in the diagram). A stainless steel baffle 5 is provided at the dosing outlet 7 on the left side wall of the sterilization chamber 2. The stainless steel baffle 5 is heated synchronously with the sterilization chamber 2 to promote ethylene oxide vaporization and control the slow release of ethylene oxide.

[0024] like Figure 2 The diagram shows a schematic of the stainless steel baffle structure of a high-efficiency ethylene oxide sterilizer provided by this utility model. The stainless steel baffle 5 has enclosures 505 on its top and both sides. The inner side of each enclosure 505 has a puncture-discharge port 501, a splash guard 504, a V-shaped baffle 502, and a filter plate 503. The puncture-discharge port 501 serves as the drug spray nozzle after the aerosol can is punctured, communicating with the drug outlet 7 on the cavity wall. There are two puncture-discharge ports 501, vertically arranged. The V-shaped baffles 502 are located below the puncture outlet 501. There are six V-shaped baffles 502, with an included angle of 120-160° and upward-facing openings, arranged in a triangular pattern. One, two, and three baffles are placed at the top, middle, and bottom, respectively. The splash guard 504 is located above the puncture outlet 501, in an n-shape, with its opening facing downwards, surrounding the puncture outlet 501 and the uppermost V-shaped baffle 502. The filter plate 503 is located below the V-shaped baffles 502 and is connected to the side barriers 505. Next, the filter plate 503 is evenly distributed with a number of filter holes 506. When ethylene oxide is sprayed out from the puncture outlet 501, the splash guard 504 guides the ethylene oxide to the V-shaped baffle 502. The V-shaped baffle 502 forms a buffer barrier for the ethylene oxide. After being buffered by the V-shaped baffle 502, the ethylene oxide is evenly released into the cavity through the filter holes 506. The sterilization cavity 2 is provided with a cavity door 4 in front. The cavity door 4 is hinged to the sterilizer body 1, and a convex sealing ring 6 is provided at the contact point between the two.

[0025] like Figures 3-4The diagram shows a schematic diagram and cross-sectional view of the convex sealing ring structure of a high-efficiency ethylene oxide sterilizer provided by this utility model. The convex sealing ring 6 has an arched convex surface and is square in shape, with rounded corners 601. The convex sealing ring 6 is fixed to the sterilizer housing 1, which has a sealing ring groove. The convex sealing ring 6 is embedded in the sealing ring groove. When the chamber door 4 is locked, the convex sealing ring 6 is compressed, causing slight deformation of the convex surface structure, resulting in a larger contact surface between the chamber door 4 and the convex sealing ring 6, thereby achieving surface sealing and improving the sealing performance of the sterilization chamber 2 during sterilization. After sterilization, the sterilization chamber 2 is depressurized and the chamber door 4 is unlocked. The convex surface structure of the convex sealing ring 6 returns to its original deformation, slightly lifting the chamber door 4 and ending the sealed state of the sterilization chamber 2. The front of the housing has a human-machine interface 8 and a recording printer 9.

[0026] The working principle of this utility model is as follows:

[0027] Before adding the chemicals, the sterilizer preheats the sterilization chamber 2 to a set temperature and evacuates it to a negative pressure state. Simultaneously, the stainless steel baffle 5 heats up along with the chamber. During chemical addition, the ethylene oxide aerosol can is punctured by a puncture device, and the ethylene oxide is ejected from the puncture outlet 501 and enters the preheated stainless steel baffle 5. The V-shaped baffle 502 structure achieves controlled release, and the anti-splash plate 504 guides the flow, allowing the ethylene oxide to vaporize more effectively. Finally, it is evenly released into the sterilization chamber 2 through the filter holes 506 on the heated filter plate 503. This process, through the synergistic effect of temperature control, negative pressure environment, and multi-stage baffle structure, ensures the efficient and safe diffusion of ethylene oxide into the chamber.

[0028] This invention replaces the direct-flow nozzle dosing method with an indirect dosing method using a stainless steel baffle 5. The stainless steel baffle 5 controls the diffusion rate of the agent, and a convex sealing ring 6 replaces the concave sealing ring. The convex sealing ring 6 ensures the airtightness of the equipment, which can protect the instruments, reduce residues, improve the sterilization effect, prevent the cavity door 4 from jamming and the sealing ring from being damaged, facilitate user use, and improve the durability of the equipment.

[0029] This article uses specific examples to illustrate the inventive concept in detail. The description of the above embodiments is only for the purpose of helping to understand the core idea of ​​this utility model. It should be noted that any obvious modifications, equivalent substitutions or other improvements made by those skilled in the art without departing from the inventive concept should be included within the protection scope of this utility model.

Claims

1. A high efficiency ethylene oxide sterilizer characterized by, The system includes a sterilizer housing and a control system for operating the entire sterilizer. The sterilizer housing contains a sterilization chamber. The outer wall of the sterilization chamber is equipped with a heating device, a negative pressure device, a humidification device, and a dosing device. A stainless steel baffle is installed at the dosing outlet on the left side of the sterilization chamber wall. This stainless steel baffle is heated synchronously with the sterilization chamber to promote ethylene oxide vaporization and control its slow release. The top and sides of the stainless steel baffle are surrounded by barriers. The inner side of these barriers has a puncture outlet, a splash guard, a V-shaped baffle, and a filter plate. The puncture outlet serves as the spray nozzle for the aerosol can after puncture, communicating with the dosing outlet on the chamber wall. Six V-shaped baffles are located below the puncture outlet, arranged in a triangular pattern with upward-facing openings (one, two, and three baffles at the top, middle, and bottom). An n-shaped splash guard is located above the puncture outlet, with downward-facing openings, separating the puncture outlet from the top V-shaped baffle. The filter plate is located below the V-shaped baffle and connects to the side enclosures. The filter plate has several evenly distributed filter holes. When ethylene oxide is sprayed from the puncture outlet, the splash guard guides the ethylene oxide into the V-shaped baffle, which forms a buffer barrier for the ethylene oxide. After being buffered by the V-shaped baffle, the ethylene oxide is evenly released into the cavity through the filter holes. A cavity door is located at the front of the sterilization chamber, hinged to the sterilizer body. A convex sealing ring is located at the contact point between the two. The convex surface of the sealing ring is arched. When the cavity door is locked, the convex sealing ring is compressed, forcing a slight deformation of the convex structure, creating a larger contact surface between the cavity door and the convex sealing ring, thus achieving surface sealing and improving the sterilization chamber sealing performance during sterilization. After sterilization, the sterilization chamber is depressurized and the cavity door is unlocked. The convex structure of the sealing ring returns to its original deformation, slightly lifting the cavity door and ending the sealed state of the sterilization chamber.

2. A high efficiency ethylene oxide sterilizer according to claim 1 wherein, The included angle of the V-shaped baffle is 120-160°.

3. A high efficiency ethylene oxide sterilizer according to claim 2 wherein, The number of puncture and drug delivery ports is two, arranged vertically one above the other.

4. A high efficiency ethylene oxide sterilizer according to claim 3 wherein, The front of the enclosure is equipped with a human-machine interface and a record printer.

5. A high efficiency ethylene oxide sterilizer according to claim 4 wherein, The convex sealing ring is square with rounded corners.

6. A high efficiency ethylene oxide sterilizer according to claim 5 wherein, The convex sealing ring is fixed to the sterilizer housing.

7. The high-efficiency ethylene oxide sterilizer according to claim 6, characterized in that, The sterilizer housing is provided with a sealing ring groove, and the convex sealing ring is embedded in the sealing ring groove.

Images